Born only a day apart, Zheng Ze Shou and Fu Li Gong have been inseparable ever since their childhood; now as adults, they live right next to each other and even work for the same law firm. On the night of Fu Li Gong’s eighteenth birthday, Zheng Ze Shou and his classmates organize a small bash for Fu Li Gong at their school roof top until the security arrives and chases them away. At this point, Zheng Ze Shou pulls Fu Li Gong into a classroom for them to hide and then gives him a key chain with a minus sign carved on to it as his birthday present. Ten years later, a few days before they both turn twenty-eight, Zheng Ze Shou’s father sets him up with a girl just like he does every six months or so. But this time around, Fu Li Gong too has a blind date…