When Ashtray (Shawn Wayans) moves to South Central L.A. to live with his father (who appears to be the same age he is) and grandmother (who likes to talk tough and smoke reefer), he falls in with his gang-banging cousin Loc Dog (Marlon Wayans), who along with the requisite pistols and Uzi carries a thermo-nuclear warhead for self-defense. Will Ashtray be able to keep living the straight life?

In this campy throwback to 1950’s monster films, a vicious monster, the Riverbeast, has arisen from its watery lair to terrorize a peaceful New England town. Local tutor Neil Stuart has seen the beast before, but nobody believed his story, making him the town laughingstock. Neil sets out to not only prove that the Riverbeast exists, but also, with the help of his beautiful pupil, scrappy tutor buddies, and a former professional athlete, to vanquish the aquatic menace!