Being ill with autism since birth, a 28 year old Molly is a carefree girl with unbridled zest for life. Her brother Buck, a 32 year old man is rapidly moving up the career ladder, having almost no contact with his sister for all these years. Until the institution that cared about her closed. He decides to take her to him and from that moment he cannot leave her for a minute. A daring, childlike and very energetic Molly turns her brother's ordered life into chaos. Buck is on the limit. And then Molly is offered to do an experimental neuro-surgical operation that can completely cure her... but can they take such a risk?