Summer Holiday is about a Hong Kong (Sammi Cheng) girl who loses her office job and finds that her boyfriend has been cheating on her, and travels to an island in Malaysia to sell her half of a beach that her cousin gave her. Only then does she know that her cousin sold the other half to his best friend (Richie Ren) to pay off debts. In her quest to convince him to sell, they begin to fall in love

Taipei, late Dec 2012. The city is going through an unprecedented winter heatwave, with temperatures in the 30s. Eight-year-old Tiger (Antoine) lives with his divorced mother, Cao Yi (Vivian Hsu), 36, who is struggling to make ends meet with her job as a magazine editor and reduced alimony payments from her ex-husband (Tang Kuo-chung). Tiger, who has a hyper-active imagination and sees his mother as a run-down robot who needs a new model, is not very bright at school and worries his art teacher (Mini Yang) with the dark pictures he draws in class.