Botanist Ethan is shocked to find his mother’s wedding groom Lucas, his ex-lover who vanished five years ago. Lucas marries Ethan’s mother with hidden motives, trying to get close to Ethan under the stepfather identity. The two are trapped in tangled taboo feelings and old misunderstandings. Gradually, Ethan learns Lucas left to protect him from his threatening family. After Margaret discovers their past, she separates from Lucas. With all secrets uncovered, Lucas earnestly pursues Ethan again without relying on family ties. They finally break the ethical shackles, heal past wounds and restart a sincere love based on equal respect.
