Après le crash de leur avion sur une île perdue, les survivants doivent apprendre à cohabiter et survivre dans cet environnement hostile. Bien vite, ils se rendent compte qu'une menace semble planer sur l'île...
Ben and Jack play chess. Ben asks Jack if he would consider staying on the Island. Jack asks Ben if he intends to keep his promise to let Jack leave. Ben says that its not all up to him in that the Island will not necessarily let Jack leave. He also tells Jack that if he does leave, there might be a time when he would want to come back.