Sentaro shows up fearing for his life, wanting Ranma's help to rescue his kidnapped grandmother.

Aloha the Principle decides he needs a vacation. He leaves Kuno on in charge not because Kuno is his son (so he says), but to give Kuno the opportunity to show responsibility. Kuno declares himself a champion of virtue. He runs into some trouble trying to enforce a school rule of no close personal relationships between sexes on school grounds.

'Be my bri-i-i-i-i-de----!!' It's been awhile, but at last the 'Ghost Cat' from episodes past has come back... and he won't release Shampoo until she agrees to marry him! Can Ranma prevent the 'cat's trophy'?

While on their way home from school, Akane and Ranma discover a strange fish in a puddle. Dr. Tofu tells Ranma he should take it home and use it for a class project he has to do. Kasumi invites Dr. Tofu to come stay with them because of the tsunami that is about to hit. Once they get home, they realize the fish is actually an infant dragon. Dr. Tofu learns that the dragons meat will grant immortality, and the Frogman (from episode 100) arrives and tries to eat the dragons meat.