This is a coming-of-age story about mutual secret love, regret, and salvation. Su Xiaoxing, a cheerful girl with hearing loss, spends her youth bringing warmth to Gu Yechen, a genius boy who seems withdrawn. But a terrible misunderstanding and the “disaster” he brings upon her leave her heartbroken, and she walks away. Years later, just as she struggles to escape the shadows, she discovers that beneath the cold mask of the boy from back then was a grand confession, silent yet deafening, and a heavy sacrifice she had never known about. Mutual secret love means both people have fallen for each other, yet each keeps their feelings buried in silence. Like two lamps shining through the fog, both lit, but neither able to reach the other’s eyes.