Plaifon works as a social worker for children and women. She meets a boy named Mawin. Mawin and his mother are on the run from an abusive father and hope to find shelter at the foundation where Plaifon works. When his mother suddenly dies, Mawin's world comes apart at the seams, and Plaifon is the only support in his life. Plaifon knows that love can give and take everything from a person, leaving a long trail of regret. She decides to leave Mawin to avoid the unwanted mistake. Will their paths cross again? Can they ever let go of their past? (Source: CH3+) ~~ Adapted from the novel "Nai Wan Thi Fon Phrang Phrai" (ในวันที่ฝนพร่างพราย) by Bhapimol (ภาพิมล)