Ye Chuan, a college student suffering from a terminal illness and struggling financially, unexpectedly obtains a mysterious app called 'Landlord of Myriad Worlds.' As long as he accommodates tenants from different worlds, he can collect money, immortal cultivation treasures, and special abilities every day. One after another, visitors from other worlds arrive at his humble rental house. At first, Ye Chuan only hopes to earn enough resources to prolong his life. But through repeated rent collections, adventures, and the time he spends protecting and caring for his tenants, his terminally ill body undergoes constant transformation, and he gradually grows into a supreme powerhouse who can dominate the myriad worlds. Only at the very end does he finally realize that what he truly wants to protect is not the emptiness of his past, but the happiness of the life he has now.