上一季完結時，Vic已經已經到了絕境的邊緣；由於Shane需要亞美尼亞黑幫的幫助，全盤脫出了他們搶劫黑幫運鈔車的內幕，使得Vic的家人遭到亞美尼亞黑幫追殺；自己也麵臨的最終委員會的審查，職位不保。卻發現了最後一顆救命稻草，墨西哥黑幫勢力的入侵使得Vic和Aceveda再次走到一起，並意外獲得了一箱子墨西哥黑幫控製的公司Pezuela收集的法明頓地區高級幹部的內幕。
　　新的一季中，Vic與墨西哥黑幫Pezuela公司是主要的焦點；還有如何處理和shane的關係，亞美尼亞黑幫仍然沒有得到解決；Vic重新回歸警隊，還會有那幾個隊員？不知老冤家Forest Whitaker扮演的檢察官是否這季會回歸？Dutch與Danielle會好上嗎？等等各種矛盾糾結。
　　The show made history by becoming the first ad-supported cable series to win the 2003 Golden Globe Award for Best Drama Series. In its first season, Shawn Ryan (Writing) and Clark Johnson (Directing) received Emmy nominations, which were also firsts for basic cable in those categories. The Shield has received two TCA nominations for Outstanding Achievement in Drama. As of March 2005, the show has become the longest running series on the FX Network.
　　參見：www.tv.com