《新兵正傳》強勢回歸！重歸社會的AhBoys已不再是新兵菜鳥，他們退伍后過著各自忙碌的平民生活。新加坡武裝部隊每年都會再次征召他們回部隊進行戰備訓練，曾經的新兵，如今變成戰備兵，他們必須放下忙碌的工作與家庭生活，重新披上戎裝。軍職互調、身份互換，訓練依舊，體能不再，重新歸隊受訓的一班弟兄，這次又會鬧出什么笑話？
Lin Yu is a boy who is constantly surrounded by misfortune and is always one step behind others. Since primary school, he has a crush on Zhang Qingqing, and continues to pin for her throughout his life. Will Lin Yu, the destined "unlucky" boy, be able to change his fate?
The plot revolves around the lives of four ex-convicts trying to turn over a new leaf. Ah Hu (Lian), Mad Dog (Lei), Jian Ren (Lim) and Sha Bao (Chin) start a food and beverage business, but their past catches up with them as Ah Hu's teenage son, played by Shawn Ho, gets into trouble for selling drugs.