Something in the past makes Shin refuse to accept Saint back as his friend. While in school management, Sung joins Jan as a dual homeroom teacher for the most problematic class; Class 2.

Saint tries to repair his relationship with Shin but Shin remains unmoved by his efforts.

Ken, Knot, and Nate team up with Jeng, the leader of Dragon Fang, to ambush Shin as revenge for the death of his brother, Jom. As they mistake Shin for Tsunami, the real Tsunami comes to the rescue.