Jessica attends a teather class, where she meets this very annoying but incredibly cute girl Yoona. She falls in love with the girl but tries to deny her feelings. 'One thing Jessica hated the most, were girls who whispered and lauged in small groups. The other thing were the year-youngers. Jessica was at grade 11, which made those girls exactly the most annoying people to her.'

Jessica and Yuri have been dating for almost a year. But what happens when Jessica's former crush Seohyun comes to their school?