Lin Zihang and Yang Yan were high school classmates. They met again seven years later. Lin Zihang had become a famous navigator, and Yang Yan founded a company. Yang Yan somehow learned that there was a "mysterious treasure" on the sea. Yang Yan was killed in the process of going there. After being rescued by Lin Zihang, he faked amnesia...
Intention: I will always believe you, even though you lied to me