A girl finds an injured pigeon in the corner of the graduation ceremony, and as she picks it up, a camera captures the secret of an old friend.
Twelve-year-olds Haesu and Seon have been longtime friends. Seon has always followed Haesu's lead, never making decisions for herself. But when she finds out that Haesu is moving to the U.S., she's thrown into confusion. That very day, Haesu falls into a pit deep in the mountain behind their neighborhood.
