Happy 300 Days (Chinese: 遇見幸福300天; pinyin: Yù jiàn xìng fú sānbǎi tiān) is a 2013 Taiwanese romantic-comedy television drama series created and produced by TTV, starring Tammy Chen and Kingone Wang as the main leads with KunDa Hsieh, Kaiser Chuang and Grace Ko in supporting roles.

A single woman decides to quit her job and leave her big city life behind to return to her childhood home when she suddenly finds out she is pregnant with her ex-boyfriend's child.

Talented interior designer Qi Tian (Kingone Wang) is recently out of a job when his arrogant and uncompromising attitude causes his boss to lose an important client.

Once Qi Tian arrives in Kenting he wants to leave immediately when he sees Gigi's "Spring Breeze" inn, but is unable to because he is stuck there when his car got damaged during the journey.

Ding Hao Quan (Kaiser Chuang) was a respected doctor and surgeon in pediatrics, but due to the death of a patient during surgery he is traumatized and loses his confidence.

Yao Yang, who is the first to fall in love with Ya Ting, plans to pretend to be the father of her unborn child, but his idea is announced first to Gigi by Qi Tian.

Their relationship is also complicated by Yao Yang and Hao Quan being in love with Ya Ting and wanting to take Qi Tian's place as the pretend father.