Stan is unfulfilled with his high-school life, always thinking that something was missing for him. Until, he overheard a prattle from some kids in his school reminding him of a girl whom he used to be close friends with, Kiri. Rumors had it she ran away from home, and still hasn't been found.
As Stan's euphoria for a new purpose and concern for an old friend collides, he sets out on many little adventures to find where Kiri is. Whether to reconcile with his old friend or some other reasons, regardless, Stan's life is not going to be so monotone anymore.