They say loose lips sink ships. Guan Cheng's just gotten stuck with an elective he doesn't really want: Latin dance class. So on the first day, he says to a friend "isn't Latin dance just about twists and turns?" This captures the attention of an eavesdropping Yu Yunfei. In response, Yu Yunfei brushes past him whispering, "ignorant" and proceeds to wow the class with his dance moves. But as Guan Cheng watches in awe, he realizes something... He's seen Yu Yunfei before! But where??