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探长（吕良伟 饰）的妻子怀孕即将生产，两人匆匆赶往医院，途中，探长接到了出警任务，称有三名穷凶极恶的劫匪正在持枪抢劫，探长赶到了现场，英明神武的他迅速而又准确地击毙了其中两名歹徒，剩下的一名被就地制服并放出狠话，称要向探长复仇。探长的妻子生下了一对双胞胎，让探长感到在意的是，这两个婴儿的额头上分别有一枚红色的胎记，巧合的是，胎记的位置竟然和那两名劫匪被子弹击中的位置一模一样。随着时间的推移，两个孩子渐渐长大，周遭发生的种种让探长不得不开始怀疑，这两个孩子有可能是两名劫匪的投胎转世，而自己的生命正遭受着莫大的威胁。

Chan-woo, who has been studying to become a police officer for 5 years, joins his friends for dinner to ask for the money to apply for his exam and ends up getting drunk. He completely blacks out and wakes up not remembering what happened in his next door neighbor's room. Not only that, he finds a bloody corpse in the middle of the room. He hurries back to his room and tries to report the incident but he had forgotten his phone in the other room. But the door is locked and he has to resort to using a rope to swing to the next door room outside the window. Once the phone is recovered, he cannot go back because of a group of cultists who are evangelizing the neighbors in the hallway. He knows it’s the last day to apply for his exam and gets antsy as time is running out.

故事内容在描述在餐厅做乐队领班的鲁涛（钟镇涛饰）和同日一起搬来的方家四姊妹同时被房东诈骗，被迫住在同一屋檐下，整天鲁涛与方家四姊妹为了小事而起争执，也因此与在摄影公司上班的方惠贞（沈雁饰）在朝夕相处的过程中两人日久生情，对彼此都产生微妙的情愫… 方家四姊妹的各种发生的事情均由鲁涛协助解决，鲁涛要求惠贞与他一同赴美，惠贞非常犹豫，最后房租到期，双方均舍不得分开却一定得分开，而惠贞也交与鲁涛一封信套，里面放在惠贞……

唯野学院的游泳部式微，只得铃木（妻夫木聡饰）一个学员，还是个菜鸟。一日，新来了一位漂亮教练佐久間，男生全被吸引过来，可是，佐久間教的竟然是花样游泳！男生花样游泳！大家纷纷打退堂鼓，只有五个人留下来。谁知，人算不如天算，佐久間才接手游泳队，她就被查出怀孕回家待产，而花样游泳的节目已经被报到文化节上了。群龙无首，游泳部像是一团散沙，所有人都毫不掩饰轻视之情，队员们也毫无自信。在对抗篮球部的一次“反击”行动中，队员们闯下大祸，只能通过卖演出门票来赔偿损失，相应的，表演也成势在必行，这下子，男生们可被逼上梁山啦。