science project she was working on, causing her to get a grade of zero. Brian also becomes disheartened when he believes that his parents may possibly get a divorce. One night, Maurice brings Brian along with several other monsters to the bedroom of an infant baby, intending to scare it. Finding this to be cruel, Brian opens the bedroom door, exposing the hallway light to the baby's bedroom, but subsequently learns that he is turning into a monster, as his body parts shrink when the light hits him. He escapes the house through the front door and walks through Todd's backyard, where Todd is sleeping in a treehouse. Todd shines a flashlight on Brian, shrinking Brian's arm in the process. The concerned Brian saws off the legs of all the beds in his house. Due to Maurice's failure to convert Brian (all monsters are former children), Eric is kidnapped by Snik — another, much crueler monster — through the couch bed in the living room. Brian enlists help from Todd and Kiersten. Gathering an assortment of bright lights, they enter the monster universe looking for Eric. "Zapping" various monsters along the way, they march to the master staircase, where Boy, the ruler of the monster world, resides. Boy offers to release Eric and Brian's friends if Brian agrees to convert, but Brian refuses. The bright lights are destroyed and they are all placed with Maurice in a locked dungeon-type room. They manage to escape by turning Maurice into a pile of clothes via an improvised light and slide him through the door crack. They re-arm themselves with more powerful lights, recruit Ronnie, and venture back into the monster world. They return to Boy's domain, and are able to defeat him, while Maurice defeats Snik with a flamethrower. Unfortunately, Brian and the others find that they cannot return home because the sun has risen. Faced with the prospect of turning into monsters if they do not return to the human world by sunrise, the children travel in the monster world from the Eastern time zone to Malibu where the sun has not risen yet and they manage to escape. Before entering the human world, Brian shares a heartfelt goodbye with Maurice, who gives Brian his leather vest as a memento, promising to meet again with him someday. The kids run to a payphone and Brian calls home to say that he