In a future Earth plagued by environmental devastation, the United Nations tasks 'Eternal Earth' with crafting an artificial jungle as a haven for wildlife. Within this 'neo-jungle', Leo, the offspring of the legendary Jungle Emperor Panja, leads a carefree existence, shielded from the harsh realities of the outside world. Despite being taunted by fellow inhabitants for his perceived weakness, Leo harbors a fierce determination to emulate his illustrious father. Meanwhile, Kenichi, the CEO's son with a unique gift for comprehending animal speech, harbors unwavering confidence in the neo-jungle's prosperity. Their fates intertwine as Leo and Kenichi cross paths, sparking a tale of ambition, identity, and the bonds between man and nature.