Rainbow In My Heart.

Chung is in charge of an advertising company in Hong Kong. He's about to marry a model Woo. But Chung finds that Woo is cheating on him on her birthday. He's hurt so he goes to Korea for his new commercial. Chung starts to appreciate a Chinese singer Chelsia Chen by watching TV. He invites her to join his commercial shooting and they fall in love with each other. The commercial's successful in Hong Kong and Chelsia becomes a star now. Chung's uncle urges Chung to invite Chelsia to come to Hong Kong and he does so. Woo suddenly comes up and requires to cooperate with Chung again but gets refused. Woo's mad then turns to cooperate with another directo Choi. However, she's not happy with Choi and still wants to go back to Chung.