Mo Xingxing struggles with mental health issues due to the tragic death of her mother, who died heroically while saving a lost boy. Despite this trauma, she enjoyed a warm and supportive youth alongside her close friends, Mi Sha and Lu Li. However, a life-changing discovery forces her to confront painful truths, leading her to leave without saying goodbye. Ten years later, Xingxing reunites with her friend Lu Li, igniting a journey of self-discovery and emotional healing. Determined to face her past, she seeks to untie the knots in her heart and reconnect with the bonds of friendship.