Tres amigas incondicionales a punto de cumplir los 40 permanecen unidas en las buenas y en las malas mientras experimentan el amor y el duelo.

Ai estudió en el extranjero hasta que, tras ser expulsado por una pelea, su padre le obliga a volver a Tailandia. Allí, Ai conoce a Nhai, su nuevo compañero de clase en la universidad, que tiene una obsesión con un llavero de pato amarillo. Ai se enamora a primera vista y se produce un romance vertiginoso.

Cher is a gamer who wants to make it big in the e-sports industry. However, his plans are dramatically altered when he's made to intern at a company. There, his boss Gun has him do some pretty weird errands, confusing Cher about his true intentions. What do Gun's actions mean? And will Cher return back to his gaming life?

Taira Kei has a talent for contemporary dance since he was young and went to study in Germany to join a dance company in his teens. He has won several international competitions and was referred to as a “prodigy”. However, he encountered a setback in the middle and got frustrated. He returned to Tokyo and takes a part-time work while he tries to re-capture his dream.

Nishihara Yui is a Chemisty teacher in her 30s, working at a prestigious high school. Even while continuing a love affair with a married colleague, she was still lonely until she meets Kei and gets swallowed in passion.