The first movie based on the 1996 anime. It was based on the manga stories Yokai Army and Dai Kaiju.
The second movie based on the 1996 anime. It was based on the manga story Obake Nighter.
The third and final movie based on the 1996 anime. It was an original story but contained elements of the manga stories The Phantom Train and The Great Yokai War.
The only movie based on the 2007 anime. Unlike all previous films, this one was not based on any pre-existing stories.
A kid named Donpei walked through a graveyard and finds a baseball bat on the ground with some funny writing on it. He swings it for fun and finds that anything he hits always lands where he wants. He becomes famous at school for always hitting home-runs. This bat belongs to a Youkai baseball team and this team asks Kitaro to get the bat back from the humans. Kitaro explains to the human kids they need the bat back but they won't. Kitaro offers a Baseball game at 3am to settle the issue; if the Humans win the Youkai will give up on the bat and if the Youkai win the human kids will have to give up their lives. Donpei's team accepts. The games is canceled before the game finished because the Youkai don't want to be caught in the sun. The issue is settled with the Youkai getting their bat back while the humans keep their lives.
Yasha is a demon that steals children's souls. It lures children to it by possessing a person and plays hypnotizing music on a guitar. The souls are stored in balloons to be eaten later. Yasha's true form is hair. Kitaro's soul gets stolen as well but his father brings his soul back to him before he is killed. In a fight with Yasha, Kitaro calls for his Youkai Lamp (a fire spirit) and burns Yasha to death. The souls of the children are returned.
The seal on a youkai castle is taken off by Nezumi-otoko [Rat-man] and the youkai from the castle requests children from a village to be given to the castle once a month to turn them into youkai. Kitaro happens to be walking by and offers to help. Kitaro asks to borrow one girl to be bait for the bad youkai. Nezumi-otoko comes to get the girl which surprises Kitaro because they know each other. Nezumi-otoko is known to be greedy and not care for anyone other than himself and is only helping the youkai of the castle for fun. The girl gets taken from Kitaro. Kitaro gets in a series of fights with the Youkai of the castle. In the end he is flattened and his chanchanko [his magic vest] is taken by Nezumi-otoko. Kitaro channels his mind into the chanchanko and threatens to suffocate Nezumi-otoko remotely and makes him re-seal the castle. Kitaro becomes un-flattened with help from his father and saves the girl before morning.
A retelling of episodes 5-6 from the 1968 TV anime.
A retelling of episode 37 from the 1971 TV anime.