is Eri and Kota Lost Their Father when He sacraficed himself to save everyone which saddened them but they grew up to Be heroes in Training and They Meet Their Friend Marty Mcfly who shares Stories with them of His Past adventures about Him and His Mentor Doc Emmett Brown and They're Impressed and he shows Them Images of a Time Machine and Kota Gets an Idea and Convinces Hatsume to Help him Make a Time Machine and she does as Marty and Eri Try to Stop him as All Three are Teleported through Time and Kota Tries Saving His Dad but Ends up Making Everything Worse now it's Up To Eri,Kota and Marty to Fix The Timeline before it Implodes in on it's Self