Sheng Nuannuan, who died of illness in her past life, unexpectedly is reborn. Upon learning that Leng Siye, the "devil" of the Imperial Capital, had silently loved her for three lifetimes and donated his heart to her, in this life, she takes the initiative to head to the Imperial Capital, chasing after this yandere young master who suffers from heliophobia, deep affection, and inferiority. She heals his gloom with passionate love, kicking off a two-way destined redemptive sweet romance.