Kawashima Masayuki is a successful graphic designer living in Tokyo with his loving wife, Yoko, and their baby girl. Outwardly, their lives are a picture of happiness and contentment, but every night while his wife sleeps Kawashima creeps from his bed and watches over the baby's crib with an ice pick in his hand and an almost visceral desire to use it. One particular night, as this struggle unfolds once more, Kawashima makes a decision to confront his demons, and sets into motion an uncontrollable chain of events seeming to lead inexorably to murder.