12-year-old Oriko Seki, who lost her parents in a car accident, ended up living in her grandmother’s Onsen Ryokan “Haru no Ya.” With the ghost “Uribou” cohabitating with her and…

When the mysterious Shiriri turns his parents into children, Shin-chan must trek across Japan to help return them to adult form.

Shin-chan is approached by his time-traveling future bride-to-be Tamiko, who asks him to help save his adult self from the ruler of Neo Tokio.