＋－正负之间讲述了两对夫夫的爱情和碰撞。不管多远多近，它们只为彼此而存在。俊和富是从幼儿园就一起长大的好朋友。他们不仅是青梅竹马，甚至在同一家公司工作，直到一场事故动摇了两人。Plus是一个自由奔放的调酒师，Jane是一个离了婚无法放下过去的人，经营着一家自助洗衣店。一天，自助洗衣店老板偶然 发现了酒保丰富多彩的夜生活。两者碰撞，慢慢实现彼此内心的渴望。~~台日合拍　　It tells the love and collision of two couples. No matter how far or near, they only exist for each other.　　Jung and Fu are good friends who have grown up together since kindergarten. Not only are they childhood friends, they even work for the same company until an accident shakes the two. Plus is a free-spirited bartender and Jane, a divorcee who can't let go of the past, runs a laundromat. One day the laundromat owner stumbles upon the colorful nightlife of the bartender. The two collide and slowly realize each other's inner desires.　　~~ Co-production between Taiwan and Japan.