Yuhua unexpectedly transmigrates into a redemption novel and is bound by a system to win over the gloomy male lead, Gu Huaizhi. She talks like she's given up, yet her actions keep crashing into his world—doing his laundry, painting, living together, misunderstandings and testing—slowly drawing a response from the silent man trapped in himself. She thinks she's just completing a mission, but without realizing it, she has become the only light he dares not hope for yet desperately treasures.