School's Mr. Nerdy Bacon, Byun Baek Hyun faces the crisis of his teenage life - LOVE. When his sister, Taeyeon ask him to be her CHAPERRON, he didn't expect that he'll fall for their school's Queenka - Eunice - who turned out to be the sister of his sister's date - Siwon. Will Mr. Nerdy Bacon get a 100% passing grade on Eunice's heart? or wil he flank on this test called LOVE?