Chu Mu, a young man from the Chu family, encounters betrayal from his soul pet, leading to his family’s downfall. Pursued by enemies, he is captured and bound to Nightmare Island, forced to serve as a slave feeding the terrifying White Nightmare within him. Any misstep could result in his soul being devoured with no burial ground. To survive and seek revenge, Chu Mu must grow stronger. Fortunately, Chu Mu forms a contract with a mutated Moonlight Fox soul pet, naming it Mo Ye. With Nightmare Island as his starting point, Chu Mu will script the tale of the strongest soul pet master.