Walker, an international assassin/hitman, is compromised during a mission. His handler sends him to a Reassignment Center at which Walker will be processed for a new identity. During his stay at the facility, a ruthless assault team storms the compound searching for someone their boss has lost. Walker begrudgingly falls in with Elda, a skilled hitwoman, and Juliet, her mysterio...。一个即将被用于拯救人类的新型机器人7723,因缘际会遇上了热爱足球的调皮少女苏小麦。而看似顽劣的小麦生长在一个不算完整的家庭里,父亲为追梦离家,使得小麦的成长也受到了影响,性格冷漠孤僻。7723的出现也使得这对欢喜冤家逐渐在相爱相杀中成为了一对挚友。然而好景不长,心怀毁灭人类之梦的庞老板追踪到了7723的下落,然而那些印刻着小麦名字的温柔颜色和绚烂时光早已在他的生命里留下了不可磨灭的痕迹……。