A decomposed body is discovered in a tub of acid at a naval base and Ducky and Abby learn that the victim was a submariner.
Eric and Donna are caught having sex in the Vista Cruiser by the police. They bring them to the Forman's home. Red tells Donna that as an adult she should tell her parents and if she doesn't he will. Kitty has a nervous breakdown when she finds out that Eric and Donna are having sex. Fez, Hyde and Kelso try to pick up women on Kelso's CB radio.
The nightmare world of a comatose child sends Buffy and her friends into a realm where their worst nightmares become reality.
Catherine is ordered by a kidnapper to accompany a man who is to deliver $1 million in ransom to him or else he will kill the man's mistress.
David moves out when he gets a job at a strange local theme park. Soon, David is transformed into "Hans the Hare", a hyperactive and perky park employee. Roseanne steps into action in order to get the real David back.