Lin Feng, the peerless genius in Tianmen Mountain, was kicked down the mountain by his master and "severed his fate in this world." He hides his cultivation and transforms into a low-level delivery boy, silently guarding Su Wanqing, an urban white-collar worker who looks similar to his sister who died young. While helping her get rid of all kinds of troubles (business rivals, forced marriage by wealthy families, harassment by gangsters), he tried his best to hide his identity. Until one day, Su Wanqing discovered the "goldfish bag" as a token of his master's sect hidden under his pillow...
