Gong Baiwan wakes up to find himself reincarnated as a Northeast tiger cub in a den deep within the Great Wilderness, where he is also bound to a System that makes him stronger by doing nothing. As long as he eats his fill, sleeps, and stores up fat, he can keep leveling up. The problem is that his white tiger younger sister is a reincarnated Empress, while his black tiger younger brother is a reincarnated Demon Lord. One seeks revenge and the throne, while the other wants to refine souls into a soul banner. Gong Baiwan only wants to be a lazy, chubby tiger, but he is forced to become the backbone of the tiger den. Amid the reckless antics of the Empress, the Demon Lord, and their many pursuers, he somehow sleeps his way to conquering the entire Great Wilderness.