Suz, a second-year middle school student, falls into a pond while visiting her grandfather in the countryside during summer vacation and finds herself in the liminal world between life and death. During seven days of training with Saemon, a guide who sends souls on their way, she reconsiders what it means to live and to part from those she loves.

A seven-day story of Suz's training to become a guide of souls in the liminal world between life and death.