Chapter 1: The Test of Trust
Isa and Suho are officially a couple. Though happy, they face gossip and jealousy from envious students. Hana, Isa's former friend, returns with unclear intentions. Meanwhile, Jugyeong and Seo Joon begin secretly dating to avoid attention at school.
Chapter 2: The School Festival
At the school festival, Isa and Jugyeong host a live makeup show, while Suho and Seo Joon join a singing contest. Everything goes well until Hana sabotages Isa's makeup in front of everyone. Refusing to give up, Isa transforms the mess into art and wins over the crowd with her creativity.
Chapter 3: The Secret Revealed
An anonymous post leaks photos of Isa without makeup. Though devastated at first, Isa regains her strength through Suho and Jugyeong's support. Seo Joon uncovers that Hana was behind the leak and confronts her, earning Jugyeong's admiration. Isa regains the support of her classmates.
Chapter 4: Declarations and Challenges
The art teacher invites the group to enter a national competition. Isa hesitates, but Suho encourages her to join. Jugyeong and Seo Joon become inseparable. However, a new student, Minho—Suho's friend—seems interested in Isa, causing jealousy and confusion.
Chapter 5: Confirmed Love
Isa makes it clear to Minho that her heart belongs to Suho. Minho respects her decision and becomes a loyal friend. Hana, however, tries to manipulate him to break the couple apart. The group travels to the national competition, where Isa wins first prize with an artwork inspired by her journey. They all celebrate in tears and hugs.