Ex-E.T. (2008)

A little alien living in a far-away planet ruled by synchronism and conformity starts showing antisocial behavior at preschool, to the embarrassment of his parents. They take him to a committee of doctors who perform several tests on him, and give him a pill that turns him into a normal child. However, the effects of the pill won't last for long and his parents will be put in a terrible position about the best thing to do with their child.