A young woman working at a retirement home takes an elderly man living there on an excursion into the countryside, but the two wind up stranded in the titular forest.

One day, a mother who used to be hospitalized in Tokyo comes to Kashihara city in Nara prefecture to find her son. But the only clue she has is the digital camera which her son forgot at the hospital.

A young woman working at a retirement home takes an elderly man living there on an excursion into the countryside, but the two wind up stranded in the titular forest.