Lili is no ordinary girl. Her nights are filled with horror. Each night a Monster comes into her room and Lili cannot ask her parents for help because she has stopped talking. One night Lili sees a Girl much like herself, who saves her from falling off the roof, but disappears again. That night the Monster reappears and Lili again takes refuge in her make-believe world. In her imagination, she climbs to the top of a ramp at a construction site for safety. While the Monster attacks her in her bed, she talks to the Girl who gives her strength. The light from the Moon reveals the Monster. Lili's mother finally finds the strength to confront him.