A lawyer turned private investigator takes on a missing person case, propelling him on an unexpected and life-altering quest.

四辆车的碰撞，四个人命运的碰撞。四个人，连同一场意外。来到他们生活的交叉点的交汇处。所谓“碰撞”，实际上并不是我们的命运。而是无论你走到哪，无论你跑多远，最终都回到了起点。