A hotel night manager with a hidden past is recruited by anti-corruption investigators to infiltrate a powerful criminal syndicate. As he sinks deeper into the underworld and forms a dangerous emotional bond, he is forced to confront his own darkness and decide where his true loyalty lies.

Li Xiaoyao journeys to Dream Island to find a cure for his sick aunt, where he falls in love with Zhao Ling’er and marries her. After losing his memory in an attack, he forgets Ling’er and returns home with her. As she tries to win back his love, Xiaoyao embarks on a quest to find her when she mysteriously disappears, uncovering hidden secrets along the way.