the idea of this film be pretty original while i do not think i have ever hear of a story so well think out about time travel or alternate time line before . the idea be base on the main character be able to communicate with his father and who be dead for 30 year . his father hear it then and 30 year earlier . they quickly do some thing that shouldn not have happen back then and which then change the future ( or present ) . the movie deal very well with how they change the future back and forth . the plot be very good and the acting be superb and the character be all believable . the special effect be very good . the very idea behind the film be very good and but the way it develop so much far be amaze . the end and while it may seem corny too some and and be and by all mean and a bit of a typical hollywood end ( some might even call it a cop out ) and but personally i just think it work well than anything else could have . i would recommend this to pretty much anyone who can watch a movie where they have to suspend disbelief and but especially anyone into time travel or alternate time line and a this be and in my opinion and one of the best movie make and concern this subject . positive .