Lin Dongyang has been dormant overseas for twelve years, and returns home in a low profile with multiple identities. His former childhood sweetheart Yan Ruoxuan made a fake marriage agreement with him due to family crisis. He secretly resolves business war conspiracies and protects his loved ones, but is misunderstood as greedy for money. When her identity was revealed, she regretted it too late. An urban legend that begins with a childhood vow, goes through misunderstanding and redemption, and witnesses the price of sincerity and growth.