Matt goes back in time to capture video footage of his and Robby's wedding as an anniversary gift . But,he witnesses something he shouldn't have before going back to the present . Now everyone is different . Brian leads Matt through Huntington Beach,which turned into an absolute hell . Brian,Brook,and Rodrick are now part of a special force while Rory is safe in England,along with Lindsay and Niki. Along the way,Matt discovers surprises,like the death of Robby,and his children being prisoners to the rival countries who have taken Huntington Beach over. Will Matt be able to go back in time again and make things normal,or will he fail and watch Huntington Beach and the whole US crumble? Read on to find out .