Xiao Jie, a Malaysian girl who just turned twenty, has arrived in Taipei for the first time to make her dream of being a pop star come true.

Xie Jie makes friends with Yi Tong, a Hong Kong girl who pursues a music career as well.

Facing life as a single woman in the middle-age, Lily tries out new lifestyle and has fun for her own.

In the new life that she has been away for decades, Lily gets to know how to get along with her own company, and what a middle-aged woman really needs before love and success.

[citation needed] The theme song of the movie which is called "20 30 40" as well was sung by Sylvia Chang, Rene Liu and Angelica Lee.