It didn't make sence, everything just happened!
First of all they didn't have a reason to leave except of the reason that they where ungrateful for what they had , they just left with a crazy boy who by the way was mad like crazy mad which destroys the Peter pan story we all know and in the end he cut off the hand of one of the brothers and wendy and the other brother just forgive him for no reason again and anyways it was not a great movie!!!!