Two insomniac students meet and start to spend their nights in an observatory together.

Two sleepless teenagers find kinship as they escape to their school's astronomy observatory. Unable to sleep at night, Ganta Nakami is cranky in class and unpopular with his classmates. Nakami discovers that the observatory, once used by the defunct astronomy club, may be the perfect place for a nap but he's not alone. Nakami and his new friend Isaki Magari find comfort in each other while coping with insomnia. No one goes near the astronomy tower due to dark rumors about the fate of the last astronomy club members. Nakami and his classmate Magari decide it's their insomniacs' sanctuary. Unfortunately, the school faculty can't allow the unsanctioned use. But if there were a new astronomy club.