CHU Yi-ping, who has a cold nature, dislocated his hand due to an accident at school. After his uncle learned about it, he sent Heng 9, an experimental intelligent robot secretly tested by his company, as a caretaker for his nephew. Although CHU Yi-ping was reluctant at first, he gradually discovered that Heng 9 could completely make up for his shortcomings and felt the warmth of companionship. However, Heng 9’s sudden failure led to a RESET. After returning from maintenance, Heng 9 actually started to cheat and pretended to be bored with CHU Yi-ping…
身性冷感的褚一平,在學校發生意外讓手脫臼,舅舅得知後,送上自家公司秘密測試的實驗智能機器人「恆9」給姪子當作看護。一開始不情願的褚一平,逐漸發現「恆9」能補足他的不足,並漸漸感受到陪伴的溫馨。然而,「恆9」的突然故障,讓他即將被RESET重啟。維修回歸後的「恆9」竟開始耍賴,並擺出對褚一平感到無趣的姿態⋯⋯