This idea of him travelling the time and being in "son's" body but not really son is pure bullshit , for me. it would have been much better if story was about real son, mom, sister (and add the father in the mix too) and not this non-sense science-fiction element. But i'll pretend that i haven't seen this and for me this is just about real mom (she's fantastic, even if a little bit too much of a bitch), son and daughter.