Nobita and the Miracle Island - Animal Adventure (English subtitle)

Nobita and Dad procure a colossal rhinoceros beetle, with assurances from Nobita to his father about its proper upkeep. Subsequently, the discovery of an enigmatic island, inhabited by prehistoric fauna believed to have vanished, and preserved by a legendary spirit of the beetle, Golden Hercules, is made by Doraemon's associates. The peaceful coexistence of a tribe with these creatures is witnessed. However, their equilibrium is threatened by a gang of futuristic felons seeking to capture Golden Hercules for financial gain.