The story takes place in a future world, but avoids science fiction elements and focuses on emotions and human nature. The heroine Erin is a botanist dedicated to ecological restoration. She lost her memory due to a childhood accident and has a gentle and tough personality; the male protagonist Kyle is a street performer and musician, melancholy and mysterious, and burdened with secrets from the past. The two met and fell in love in the ecological park, and gradually discovered that they had a brief intersection in childhood. Irene once rescued the orphan Kyle. However, amnesia, identity misunderstanding and external obstruction lead to an escalation of sadomasochism. The highlight is the contrast between innocent memories like children's stories and the future background, and the reversal of Kyle being Erin's childhood playmate, but being forced to become a "traitor" to protect her. The plot highlights the conflict between sadomasochism, emotional redemption and identity revelation, and ultimately explores the true meaning of love and sacrifice in sadomasochism.