well.. Sydney is married to Vaughn, she has a daughter and they live in Canada, a place called sackville or something, I dunno, but anyways, she got knocked out and she forgot about the past couple years, basically their life there. Umm, so there's a guy from the past who comes back and manipulates her to get something for him and she runs into Irina and they escape and go back home, oh and Jack lives in Sackville with them, and Irina and Jack end up together, and things end. eH, I'm not the best at explaining it... but there's a sequel called smokescreen, that one's pretty good too ^_^