Yi Yi is an epic story about the Taipei Jian family seen through three different perspectives: the middle-aged father NJ (Nien-Jen Wu), the young son Yang-Yang (Jonathan Chang), and the teenage daughter, Ting-Ting (Kelly Lee). The three-hour piece starts with a wedding, concludes with a funeral, and contemplates areas of human life in between. The father, NJ, is unsatisfied with his work and the desire of his business partners to enter into a deal with a well-known Japanese videogame company. While his partners are only concerned about making money, NJ finds that his honest nature is unappreciated in the commercial realm. To his surprise, he finds a connection with the Japanese software mogul, Ota. A former old flame, Sherry, tries to walk into his life after a chance reunion. His youngest son has troubles at school with his teachers, while his daughter has to handle a love triangle involving her friend next door and her troubled boyfriend. All three try to deal with their problems while also caring for NJ's aged mother-in-law, who is in a coma, and in the absence of NJ's wife, who has left for a Buddhist retreat after facing a midlife crisis. In addition, A-Di, NJ's overweight brother-in-law who marries a starlet at the start of the film, has to wrestle with his demanding wife and a former love, complicating matters within this extended family. The other Taiwanese cast members include Elaine Jin as NJ's wife, Min-Min, Su-Yun Ko as NJ's former love Sherry, Hsi-Sheng Chen as A-Di, and Pang Chang Yu as Fatty. The film also stars Japanese comedian Issei Ogata as a Japanese software mogul, Ota.