Swimming team coach Wen and her family were living a carefree life, until one of her swimmers commits suicide. Now with secrets coming to light, and her autistic daughter playing with an invisible boy, her life takes a dark turn.

A series of tragic events unfolds after Chang Chi-Mao's daughter goes missing as an infant. Chang becomes consumed by revenge against a powerful criminal organization suspected of kidnapping her. Along the way, he clings to the hope that his daughter may still be alive, determined to rescue her and break free from their dark fate.

At K-DOL Academy, where idols gather, the stage is a battlefield and popularity means everything! Confident Sky, cheerful Anroy, and the quietly supportive Little Crab find their relationships growing increasingly complicated as dreams and romance collide. Some push themselves to the limit in pursuit of glory, some let love throw off their rhythm, and some get lost between friendship and competition. Youth has no pause button—“Love Trainee” captures their growth and confessions with the most passionate energy and heartfelt emotions.