杰克（柯林·法瑞尔 Colin Farrell 饰）和卡雅（朱迪·特纳-史密斯 Jodie Turner-Smith 饰）收养了名叫美香的华裔小姑娘，为了美香能够接触属于自己种族的文化，杰克购买了仿生机器人杨（贾斯汀·闵 Justin H. Min 饰）。之后，杨成了美香最好也是最信赖的朋友，同时也成为了这个家庭里不可或缺的一份子。 随着时间的推移，米卡渐渐长大，而杨也因为零件老化等问题，机能发生了故障。杰克想要找人修好杨，但因为杨是一款“二手”的机器人，所以自然没有任何的售后保障。杰克通过特殊的手段获得了记录了杨自出厂以来全部记忆的内存条，在播放这些画面的过程中，杰克发现了杨的一些不为人知的记忆。
ISABEL SULLIVAN (15) has just moved to a small town to live with her uncle PAUL who is the town's mayor. Isabel has recently lost her parents in a car accident. Feeling very alone and friendless, Isabel befriends a stray robot dog named ARCHIE. Though he looks like a normal dog, he is anything but. He can talk. He can run at blinding speed. He's got super strength and x-ray vision. Isabel and Archie become fast friends. She teaches him how to be a normal dog while he helps her to fit in with the cool kid clique. Most of all, Isabel can confide in Archie about what happened to her parents. Archie can relate. He's never had a family - until now. As the summer progresses, things start to get tricky. Paul is up for re-election and finds himself running against VERONICA TAYLOR who happens to be in cahoots with BURGERTROPOLIS - a national fast food franchise that has been trying to buy Paul out for years. What's worse, an evil man named HUGH JABLONSKI shows up in town claiming to be ...
