The movie tells the story of Tian Xiaole (Chen Yao), who only thought about the "60-point pass life" female man, after meeting Cheng Daye (He Haochen), the savior with a "100-point halo", his life began to change dramatically , And willingly act as the "iron buddies" of each other, secretly falling in love with Cheng Daye in the name of friends, but in fact the two of them have always hidden the most sincere feelings for each other in their hearts. After all the ups and downs, waiting, and misses in life, returning to the beginning of love, it turns out that love at first sight is the simplest thing in the world.

　　电影讲述了一心只想过“60分及格人生”女汉子的田小乐（陈瑶 饰）在遇到了有“100分光环的救世主”成大业（禾浩辰 饰）之后，生活开始有了巨大的变化，并心甘情愿充当对方的“铁哥们”，以朋友的名义默默的暗恋着成大业，但其实二人在内心深处对于彼此一直隐藏着那份最真挚的情感。经历了人生各种辗转、等待与错过，回到爱的最初，才发现原来一见钟情是世界上最简单的事。