The girls’ leisurely boat trip off the Australian coast takes a dramatic turn when their dinghy has an engine malfunction. With no oars and no phone reception, Ally is forced to swim to shore to try and get help. For the first time in their lives, Jackie and Emma are alone at sea and naturally become very nervous when they start drifting towards the open ocean. Fortunately, the currents take them within range of an island and they decide to brave the depths, jump off the boat and pull it to shore using the bow rope. Finally making it to the beach they head for higher ground only to realise the tide has risen, washing their dinghy away. After trekking to a high cliff top in the hope of finding phone reception, Emma accidentally drops her phone down among some large rocks. When she goes to retrieve it she slips, slides down some rocks and grazes her hands. It’s now up to Jackie, who’s very afraid of heights, to go down and help Emma back up the cliff. In the meantime, Ally has made it to shore, found Dan and they’ve gone back out to sea and found the abandoned dinghy. Now can they find Emma and Jackie?