Zan explains to Jayna that you don't have to see the first film or Weekend at Bernie's II to understand the third one, you just have to know that "Bernie's dead."
Weekend at Bernie's II is a sequel film to Weekend at Bernie's. Zan told Jayna that it's really not necessary to watch this movie or the first one to understand the third one, you just have to know that Bernie's dead.
Reference[]
The New Adventures of the Wonder Twins