A hole in the roof means rain water is leaking in through the ceiling of Topsy and Tim's bedroom, making Topsy's top bunk and Little Moon Bunny wet. Tim helps Dad mend the leak with some help from Kerry's dad, Carson.
Topsy and Tim can't sleep in the bunk beds as usual because their bedroom is being redecorated by DIY Derek. The twins look for somewhere else to sleep until Dad tells them they're going on a special camping adventure.
When Topsy and Tim's friends Tony Welch and Vinda come to play, things don't quite go to plan at first but by the time their mums come to pick them up, the friends are having so much fun they don't want to go home.
Topsy and Tim are growing out of their old, matching twin clothes, so Mummy buys them new jeans. Topsy is delighted with her new jeans - they have butterfly designs all over them. Tim's new jeans have a cool dinosaur print but Tim is not sure he is ready to wear bigger clothes yet, especially ones which are completely different to his twin's.
Grandma and Mossy the dog have visited Topsy and Tim but when it's time to take them home for Mossy's tea, Dad simply cannot find his house keys anywhere.
Topsy and Tim look after Grandma's dog, Mossy, with the help of Tim's best friend Tony Welch. When Mossy starts being a bit naughty, they realise it's time for her walk. By the time they've got Mossy's lead, ball and poo bags, Tim worries that she might not get to her favourite bush in time to do her business!
Tim makes a marble run with the help of his friend Tony Welch. Topsy suggests the girls make a marble run of their own.
Topsy and Tim enjoy a morning of fun and games with Dad, but grow impatient when they watch him clean the car on his own.
An estate agent is coming to sell Topsy and Tim's house but there's a bad smell coming from somewhere!
Topsy and Tim pet-sit their friend Kerry's guinea pigs, Poppy and Bailey, but the animals escape from their run!
Jamie the postman is delivering a big box to Topsy and Tim's neighbour Mr Fishwick. Mr Fishwick is out so the twins look after the box until he returns. When he comes to pick it up, they can't wait to find out what's inside the big box.
Topsy and Tim play hide and seek with their friends. Rai wins the game by hiding in the bathroom but when it's time to come out, the door is stuck! Topsy, Tim, Tony and Kerry try to find a way to get Rai out of the bathroom.
Mr Rosen visits Topsy and Tim and shows them how to make a house from a giant cardboard box. After Mr Rosen leaves to do some shopping, Topsy and Tim discover he's left his wheely bag behind. The twins must get the bag back to Mr Rosen so he can carry his shopping.
Topsy and Tim enjoy making life-sized cardboard cut-outs of themselves, but milk is accidentally spilled over Tim's cardboard twin.
Mummy and Dad are going out for dinner and the twins are being looked after by their new babysitter, Danielle.
Tim makes a nest for an egg and puts it in the airing cupboard in the hope that it will hatch into a baby dinosaur.
On the day the parts for the nursery school play are announced, Topsy and Tim find out they have nits and can't go to school
Mummy has hurt her arm and missed Topsy and Tim's nursery school play, The Three Little Pigs, but all is not lost!
Mummy asks Topsy and Tim to sort their old toys. She wants the twins to give away the ones they don't use any more before they move house.
On their way home from nursery school, Topsy and Tim collect lots of sticks. Topsy calls her favourite stick Sticky. When Grandma visits, her dog Mossy takes Sticky and the twins can't find it anywhere!
Live-action children's show. Mr Rosen's friends teach Tim how to play the ukulele when their minibus breaks down outside the house.
The supermarket delivery brings Vinda's birthday card and present but no wrapping paper.
It's the day of Vinda's knights and princesses party and Topsy is dressed up in her red knight costume.
Topsy feels hot and has an itchy head, so Dominique calls the doctor who confirms she has chicken pox.
Mummy gives Topsy and Tim some sunflower seeds to grow in their garden. While planting them, Tim loses a seed.
Tony Welch and his mum, Elaine, visit Topsy and Tim with Tony's new baby brother Jack.
It's the night before Topsy and Tim move house and Kerry's parents arrive for a farewell dinner party with Mummy and Dad.
It's moving day. Topsy and Tim help Mummy and Dad and the removal people pack their belongings into a big van.
Topsy and Tim remember some of the wonderful, fun times they have shared in the house.
Topsy and Tim are excited about their new house, but when Tim starts to miss their old bedroom, Dad comes up with an idea.
Topsy and Tim love caring for their new pet rabbit but struggle to agree on his name - until they notice his wiggly nose!
Josie Miller lives just across the road from Topsy and Tim. When she comes to play, they all make a robot rabbit from cardboard.
Topsy and Tim's neighbour Mr Fen is building a new driveway. Lots of bricks are being delivered, so Mr Fen asks the twins for help.
Kerry and Tony help put up new twin swings in Topsy and Tim's back garden, but Dad loses the bolts for the swings.
Grandma's dog, Mossy, isn't feeling very well. Tim suggests they bake some doggy biscuits to cheer her up, but it is vet Topsy who discovers what is wrong
It's Topsy and Tim's last day at nursery school and Tony Welch's dad is going to take a special class photo. Unfortunately, Miss Maypole calls to say that nursery must close for the morning. Topsy and Tim decide to host the last day of nursery school at their house and invite all of their class friends!
The twins are excited because Grandma has given them brand new bikes with stabilisers. Tim finds it hard learning to ride his new bike.
When Topsy wakes up, there is a lost cat sleeping on her bed! Topsy and Tim try to find out who the cat belongs to.
Topsy and Tim get ready to go camping for the weekend. Mummy makes a fun, indoor tent in the living room with a clothes airer and a sheet.
Grandma buys a house-warming present. It is a baby apple tree and Topsy and Tim help to plant it in their garden.
The twins find a clever way of getting their pet rabbit Wiggles into his carry basket, so they can take him to the vet.
Mrs Higley-Pigley's cat, Tiger, is stuck up the tree outside Topsy and Tim's house. When Dad and Mr Fen fail to rescue the cat because he has climbed too high, the fire brigade come in a fire engine to help.
Topsy, Tim and their friend Tony Welch accidentally break one of Mummy's vases. They try to fix it themselves but learn that it would have been better to tell Mummy about the breakage in the first place.
It is Mummy and Dad's wedding anniversary, so Topsy and Tim make a special cake with the help of their babysitter Danielle. The twins make it look like a proper wedding cake and choose a theme for each layer.
Dad takes Topsy and Tim to see the dentist for a check-up. They hear about the tooth fairy from their friend Josie, and Topsy has a plan to catch a glimpse of her.
Topsy and Tim wallpaper their parents' bedroom with Dad, but he isn't very good at decorating and they get in a terrible mess. The twins decide it's an emergency and remember who they can call for help.
Grandma comes over to babysit Topsy and Tim. Before they go to bed, Grandma lets them bath Mossy the dog! It's messy and lots of fun.
The twins go with their father to his office for the morning, and are given jobs to do.
Topsy and Tim make Mummy a 'welcome home' surprise for the front of the house with Dad.
Topsy accidentally spoils a special birthday party invitation Tim has made for his best friend Tony Welch, so Mummy helps her create an even better one on the computer.
The twins help Mr Rosen do his wheelchair exercises, then decorate a surprise get well gift which he can use when doing his fitness routine at home.
The twins are excited about visiting their new school for the first time, but wonder how they are going to get there each day.
The twins are taken to visit their new school and meet their teacher, but they are worried about getting lost.
The youngsters are pleased with their new school shoes, and even stomp around wearing them at bedtime. They become even more excited when they have their very first sleepover.
With the twins due to start school, two of their teachers come for a home visit. Topsy cannot wait to show Miss Terry all of her toys, but Tim is shy.
Topsy is excited for his first day at school, but Tim feels unwell. However, they receive an unexpected surprise when they arrive at the school gates.
The twins wake up early before their first day at school and remember the times they have shared in the run up to the big day. Last in the series.
When Topsy and Tim go camping with Mummy and Dad, the trip takes a turn when Topsy feels unwell.
When Tim realises his eyesight is not as good as it should be, Mummy arranges for him to have an eye test. Meanwhile, Topsy makes a new friend in hospital and Grandma's dog Mossy has to go to the vet.
The twins camping trip doesn't quite go as planned when Topsy is rushed to hospital for an operation. While Topsy is recuperating, Tim realises his eye is not as good as it should be, so Mummy arranges for him to have an eye test.
Tim and Dad go to hospital to collect Topsy and Mummy, and Topsy says goodbye to her friend Molly. Later, Tim tells his parents about his failing eyesight.
Grandma collects Tim from school and takes him for an eye test, where he is told he is short sighted. Tim chooses frames for his glasses with the help of Mummy and Topsy.
Tim arrives at Tony Welch's house for a playdate, where he helps Mr Welch with a DIY job in the garden and bonds with Tony's best friend Sam.
After playing with DIY Derek's dog at home, Topsy and Mum go to Grandma's house, where Topsy examines her dog Mossy using her toy vet set and cheers her up with a tennis ball.
Tim finally gets his new glasses, while Topsy spends time at a pottery cafe.
Lovely Mossy is very unwell. The whole family go to see her at the vet's.
Grandma gets a new puppy and the twins prepare for the arrival of their new baby brother.
It's the night before Christmas, and Topsy and Tim finish decorating the tree. The twins enjoy wrapping gifts for Mummy and Dad, dancing around the living room and hanging up their stockings. Before going to sleep, Topsy and Tim sneak a look out of the bedroom window for Father Christmas and enjoy a magical surprise.
