Four years after being fired from her secret-agent job training killers, a woman has built a new life for herself as a high school principle but retains old enemies. After an attempt on her life one morning, she learns the school's baseball coach has a similar past, and the two put their old skills to use in their new, mundane lives.

A high school principal's secret identity is potentially compromised when two visitors from her past seek her help in solving a crime.