Leon, Jason, and Shen May head in their submarine into Chinese waters while Claire researches into what happened to the Mad Dogs. Their mission is also shown during a flashback in which the Mad Dogs rescued a survivor, but could only bring back his infected body. While on the submarine, rat-like B.O.W.s attack and kill the crew. Leon, Jason and Shen May evacuate the submarine together in an escape pod before it self-destructs. The destruction is blamed on a nearby Chinese fleet by Defense Secretary Wilson...