Compilation of Episodes 1,2 46, 56 and 71 from the 1963 Astro Boy series that were reproduced in color for this theater version.

A Toho film featuring the comedy duo Konto 55, (コント55号), comprised of comedians Kinichi Hagimoto and Jiro Sakagami.

His goal is to help the weak and defenseless, but his saving a mouse makes him the most wanted in all the land. On the run from incessant, dim-witted mice, Perro befriends a young miller's boy, Pierre; together, they decide to seek fame and fortune. When they cross paths with the lovely Princess Rosa, Perro determines to get Pierre hitched to Her Royal Highness.