Kyle是谁？没人知道。镜头一开始从天而降转到树林中，一个赤身裸体的浑身布满黏液的少年进入眼帘，他的大脑就像一个刚出世的婴儿般，但是却有极强的领悟能力，常人只用大脑的7%，爱因斯坦是9%，而Kyle却……
还有很多未解的迷，他竟然没有肚脐，那么他的父母是谁？如果他没有父母，那么他又从哪里来？
他没有地方可去，一个好心的社工Nicole收留了他，把他带到她的家里，故事从这里开始……
第二季结尾Kyle兴冲冲的赴舞会约见Amanda，谁知伊人消失得无影无踪。到底是谁掠走了Amanda，还有多少秘密和危险等待这Kyle，请大家继续关注神奇小子第三季的精彩～！

A mysterious teenager is found disoriented in the middle of traffic. Kyle, as he is later named, lacks a navel and has no recollection of his past. Taken in by the Trager family, Kyle discovers that he has extraordinary abilities.
Season 1: Kyle realizes he has abilities that no normal human shares. With the help of the Trager family and his new friends, Kyle tries to find out who he is, where he came from, and why he woke up in the middle of the forest with no knowledge of the world.
Season 2: After discovering his origins, Kyle learns that he has a counterpart. Her name is Jessi, and together they try to harness their abilities and find out more about the mysteries surrounding their creation, and all the while balancing their school and family lives.
Kyle XY is produced by Touchstone Television and filmed in Vancouver, British Columbia, Canada.
Broadcast History: Season one aired Mondays on ABC Family in the 8:00 pm timeslot, it was repurposed to ABC the following Friday in the 9:00 pm slot.
The first four episodes of season two followed the same pattern, but ABC discontinued the repurposing after "Balancing Act", leaving it airing only on ABC Family Mondays at 8:00 pm.
Season three brought a timeslot change, with the episodes airing Mondays at 9:00 pm.