This is the story of Taeyeon the cheerful girl. One day Taeyeon's Parents told her to engaged with Jung Sooyeon, at first she refused because she's still a student in high school but when she saw Sooyeon, Taeyeon knew she was in love at the first sight. Not like Taeyeon, Sooyeon is cold girl. She's very opposed the idea but when she saw taeyeon's effort, Sooyeon gave up because she knew sooner or later she will fall in love with Taeyeon. After months theyr so in love, when there's Taeyeon, there's Sooyeon but one day Sooyeon gone so suddenly. Taeyeon confused when she isnt heard news 'bout her lover. She came to her house but their parents just give her a letter obviously from Sooyeon. When Taeyeon read the letter, She cant believed that the one she love had left her.