Siying (Vivian Song), a freshman at the university, works at the coffee shop "Waiting for Someone". She meets Albus (Ya-Yen Lai), a cool lesbian who has excellent coffee brewing skills and can make any special coffee ordered by customers, the mysterious and beautiful proprietress (Vivian Chow) who seems to have nothing to do every day, and her secret crush, Zeyu (Liang Zhang), who likes to sit in a fixed seat and seems to have a constant girlfriend around him. Atuo (Bruce), a senior with many bizarre legends in college, and a group of friends go to "Waiting for Someone" to drink coffee, but they run into Albus, a lesbian who snatched his ex-girlfriend away. Siying, who has a strong sense of justice, can't stand Atuo being laughed at by his friends and scolds them, and becomes friends with Atuo. The cheerful Atuo is passionate and sincere. In order to fulfill his dream of traveling around the world, he works everywhere, so he keeps delaying his graduation and becomes a legendary senior on campus. Because of working, she met Bao Ge (played by Li Luo), the owner of a hot stir-fry restaurant who looked like a gangster but was actually a movie director, and Jin Dao Shen (played by Lan Xinmei), the owner of a laundry shop with amazing cooking skills. Atuo, who was deeply moved by Siying's sense of justice, often introduced his interesting friends to Siying, and Siying's life became colorful because of Atuo. Siying has always had a crush on Zeyu and just regarded Atuo as a good friend with whom she could talk about anything. It was not until Atuo decided to leave Taiwan and go abroad to realize his dream that Siying realized that the person she was waiting for was not Zeyu, but Atuo...