Close tells the story of Sam, a counter-terrorism expert assigned to protect a wealthy heiress. Sam, a young woman, is a successful counter-terrorism expert. However, he finds the new task given to him quite easy compared to the work he has done so far. When a wealthy businessman dies, his young daughter Zoe takes over the company. All eyes are now on Zoe. So Sam is assigned to protect the young heir. Although Sam sees his new assignment as a simple job, Zoe soon becomes the target of attackers. Things escalate further when Sam reveals an evil plan. While Sam tries to protect his young heir from a group that specializes in kidnapping, he also teaches him to defend himself against attackers. Sam and Zoe, whose lives are in danger, will either take the lives of the attackers they encounter or lose their own lives...