The richest man's only son used his whole life to exchange for his father's life, drinking the Dust-Breaking Pill to forget everything. Three years later, he descends the mountain as an orphan Taoist priest, slapping the faces of those who harmed his whole family back then. The audience all knows who he is, the villains also know, only he himself does not know. If the male lead remembers his family, the curse will flow back along family affection to his family members, so he must forget.