Kang and Xin have been in a long-distance relationship for many years, and finally, in 100 days, Xin will graduate from Taipei and return. In addition to video conferencing, Xin from the art department also draws a picture every day to count down their meetings. In order to survive, KangQian took Xin on a trip to Europe to work as a courier for an online store, but he accidentally signed up to learn dance and got to know dance teacher Sting. Ting is a part-time junior class teacher in the dance studio. Kang is among the studentsThe least talented person who jumps clumsily always can't keep up with the rhythm. Ting often stays behind after class to teach Kang. Kang's clumsiness, humor, and straightforward personality often make her laugh. in the course of timeThe relationship between the two is becoming increasingly delicate. Ting is well aware that Kang has a girlfriend and has been suppressing herself from maintaining boundaries with Kang. Kang and Xin's long-distance love is counting down day by day, and their relationship with Ting is fermenting day by day,He also realized it himself. Xin suddenly came back early to give Kang a surprise. The three of them met at a crossroads at the traffic light and faced a decision.