After leaving her boyfriend, veterinary surgeon Kam Wai-ting moves to Sai Kung with her beloved dog Donut and starts a new life. At her new workplace, Wai-ting meets animal communicator Wong Sing-yan. The duo often quarrel due to their different values regarding pets. In an accident, Sing-yan acquires skills for communicating with Donut, and a man and a dog gradually build a friendship and help each other. Sing-yan learns from Donut that Wai-ting has some love issues, so he helps her decipher her conundrum. The duo's relationship improves, and they gradually like each other. However, they do not have feelings of affection due to their age difference. Donut wants to play matchmaker for the duo, but it gets into hilarious situations. And its ideas even backfire. Each of the duo also has their own admirers, resulting in more obstacles in their relationship.

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