Gabimaru the Hollow, a renowned ninja from Iwagakure Village, known for his icy demeanor, finds himself condemned to death after being betrayed by his own kind. Despite his desire for release from a life marred by bloodshed and deceit, Gabimaru's resilience in facing different execution methods betrays a hidden motive: reuniting with his wife, the beacon that once thawed his heart. Witnessing Gabimaru's unyielding spirit, Asaemon the Decapitator extends an offer. In exchange for a royal pardon, she enlists Gabimaru on a perilous voyage to a mysterious island rumored to house the fabled elixir of immortality. Tasked with a team of condemned individuals, the journey to this enigmatic Paradise unfolds with treacherous challenges and unknown dangers, testing the limits of their resolve.