When a scientist named Gabe (Rufus Sewell) disappears on a business trip, his wife and young son are left to wonder what happened to him. Twelve years later, the father-in-law, Sal (Victor Garber), who is a professor, pieces together what happened--and it looks like a trime-travel experiment is involved.
By this time the wife, Marika (Gillian Anderson) is chronically depressed and has tried killing herself twice. Her brilliant son, Erol, is frustrated at taking care of her and being held back from attending MIT because of it. When his grandfather tells him his theory, Erol doesn't know what to believe at first. Eventually he does and is able to build a time-machine. They've surmised that the father has gone back to 1946 in order to meet with Albert Einstein and that he was mugged and killed. There's a newspaper article from that time period about an unidentified man being murdered--and the man has the same stopwatch that the father had. If they can only prevent his death from happening and get him to return home their lives can resume with how they were supposed to be if he was still in their lives. And a few things happen to convince Erol that this is the right thing to do.
Although it's a bit slow, this is an interesting time-travel movie. Recommended.