Doraemon Movie 32: Nobita to Kiseki no Shima - Animal Adventure

Nobita promises his father that he will care for a large rhinoceros beetle, but his interest soon leads Doraemon and their friends to a hidden island where creatures believed extinct still live. The island's people coexist with prehistoric animals under the protection of the Golden Hercules, a legendary beetle sustaining its unique environment.

A band of criminals from the future arrives to capture rare animals and seize the Golden Hercules for profit. Nobita also encounters a boy who resembles his father as a child, turning the struggle to protect the island into a journey that connects his family's past with the fate of its endangered inhabitants.