Lu Han, a Chinese member of a singing trio, along with his 2 other members, Kyungsoo and Baekhyun, receives a letter for participating in a collaboration with 4 dancers under the same company. One of the dancers, Sehun, extremely cold and distant towards the new guy Lu Han, tries to hide his feelings for the older boy with his inappropriate behaviour. No matter how much the older tries to get closer with a boy, Se Hun rejects it. But everything between them changes when....