Jack is as determined as ever to find a way back to his own time and defeat Aku. Then he hears of a mysterious cave on the faraway isle of Tiempo. Anyone who enters the cave may travel through time to the destination of his choosing. The journey to Tiempo is rough, but Jack is determined to make it. Until his ship is wrecked and he finds himself the hostage of a race of people who want to use him as a sacrifice to a great sea monster who plagues their shores. Now it's up to Jack to fight the sea monster... and see if he can escape with his life.