|Yûko Daike||Masao's Mother|
|Kazuko Yoshiyuki||Masao's Grandmother|
|Kayoko Kishimoto||Kikujiro's Wife|
|Akaji Maro||Scary Man|
Masao is a lonely 9-year-old boy who decides to spend his summer vacation looking for his estranged mother, whom he has never met. Kikujiro is an immature man who has never had any serious responsibilities. When his wife gives him 50,000 yen to travel with Masao, the journey begins.