A loving couple have four kids, who are great and cute kids that love each other a lot. However, tragedy strikes and the kids are all separated. 20 years later, one of the kids (now grown up into the beautiful and talented Gigi Leung) returns to China, after becoming a famous musician in the USA. She decides to try and track down her 3 siblings. Although they have ended up in radically different circumstances, the bonds of kinship are shown to be unbreakably strong.