小小伍長狄奇，因一次拯救大元帥蒙大同，被連升七級成為旅長，負責管理昇威鎮。其他三位盤踞昇威鎮外圍的軍閥，氣得眼裏噴火，出暗招對付，狄奇幸得三位出生入死的軍隊隊員馬炭、羅義、冬來兄弟同心抗敵，還威迫利誘敵對的武器專才顧落蘆加盟，五人於昇威鎮才能站穩陣腳。可是，狄奇三位太太葉天嬌、艾妞及章沅婉在家中爭寵，沅婉更是革命黨員，狄奇明知其身份仍把她留在身邊，再加上軍營中有人野心勃勃，使昇威鎮危機四伏……

During the chaotic Warlord Era, an eccentric soldier has a sudden stroke of luck and is promoted seven ranks to Marshal. He, along with his three silly friends, do all sorts of bizarre things. Meanwhile, externally, three wild warlords are eyeing him like a tiger. Internally, he doesn't know whether any of his three wives are spies. Ultimately, a battle for hegemony unfolds, with shells flying and dilemmas between friends.