Ep 4. Episode 4

Jin Guk becomes jealous when his childhood friend Hye Mi starts acting cold towards him after Sam Dong confesses his feelings for her. Meanwhile, Baek Hee struggles to keep up with her training and is criticized by her fellow students for her lack of talent and dedication. The students also face a challenge when they are paired up to write and perform a duet in front of the entire school, causing tensions and rivalries to escalate. Hye Mi and Sam Dong team up to create a heartfelt duet that impresses their peers and teachers, while Jin Guk and Baek Hee struggle to find common ground and create a successful performance. In the midst of all the drama, an unexpected visitor shows up at the school, leading to revelations and complicating the students' relationships even further.