A gap is an opening, an opening is a space between barriers, a space between barriers makes for tremendous vulnerability. At the first sign of a gap, it should be shored up, or repelled, or stopped, or hidden, or overwhelmed. These are called the principles of stopping gaps." - The Master of Demon Valley, ancient Chinese classic.

STOP GAPS explores the tactics and strategies for a high level protective detail, and the value of protectors to "find and stop gaps" in their rings of protection before they are exploited by their adversaries.

When an unknown intruder penetrates the security surrounding the Missouri Governor's Mansion, Lieutenant Kacey Underwood and her team in the Governor's Security Division try to determine the intruder's identity, motive, and future intentions, before he can strike again. As investigators close in, the intruder takes the initiative, and Underwood and her team will be tested to the limits of their training and abilities.