In this full-length feature film, Doug and Skeeter finally discover the monster of Lucky Duck Lake, and it turns out that he's actually really nice. Doug and Skeeter name him Herman Melville after he tries eating a copy of "Moby Dick". After only showing Herman to the Dink's, Mrs. Dink realizes that Herman came out of the lake because Bluffco has been polluting it for years. Although Doug and Skeeter try to keep Herman a secret, Guy finds out about him and tells Bill Bluff. Once Bill knows, he attempts to cover the whole thing up by capturing Herman. One night, Skeeter and Doug try to let Herman free but Bill and his men capture Herman. So Doug and Skeeter, along with the Sleech twins, work together toplan Herman's escape.
When Roger and his gang see the monster come out of the lake, they realize that Skeeter now has a monster on his side. So Roger comes up with a plan to have a "monster" of his own on his side.
Plus, Doug wants to take Patti to the school's upcoming Valentine's Day dance which is taking place at Funkytown, but he has to compete with Guy who is on the dance planning committee with Patti, and also wants to take her to the dance.moreless