“如果当时没有那样做，就一定不会走到如今这步田地！”
每个人都难免曾在人生的某一时刻产生过这样的念头吧，可是世上难买后悔药，人们所做的只能是抛弃过去，直面未来。而人生重启者——安利（田中直樹饰）的出现却使得“如果”不再只是“如果”：被姐姐抢走男朋友的受害者，被上司性骚扰加陷害的受害者，被变态杀人犯杀害了女友的受害者……本剧的14位主人公在人生的关键一刻都幸运地遇到了安利，得到了选择“Reset（人生重启）”的机会。
人生果真重新开始，主人公们也小心翼翼地企图避免错误或阻止悲剧的发生，可情节的走向似乎总不尽如人意，于是，这些主人公开始在人生二度重启中徘徊……

Follow the life of Michiru Aida, a beauty parlor assistant who returns to Tokyo after 4 years. Bullied by her seniors at work and abused by her boyfriend, she is reunited with her best friend during high school, Ruka Kishimoto, a skilled motocross racer. Takeru, a make-up artist, is introduced to Ruka by her housemate, Eri and thus begin a journey of friendship.