

Because of misunderstading Tiger thinks that he can not be Fievel's friend. Cat R. Waul leaves the town and Chule becomes a friend of Fievel.
All mouses of the village are going to The Cheese Festival but Fievel misses the trip. Cats come to town are searching mouses but they capture Tiger. Fievel starts to think like The Lonesome Ranger and cats will be in trouble...
Fievel continously be late for school because of many adventures with Tiger, so he is told not to meet Tiger anymore. Tiger has written to Miss Kitty and told her that he is a sheriff. Fievel must help him when Miss Kitty arrives to town.
Fievel wants to borrow his friend Tony's bumerang and it flies straight to Cat R. Waul's pocket. Fievel, his sisters and Tiger are going to get the bumerang back and they have great adventure by the river.