After Fraser attempts to chide a driver parked in front of a fire hydrant who turns out to be a gun-runner, Vecchio is a victim of a hit-and-run driver who then saves his life. Vecchio believes himself to be in love with the driver, despite her apparent connection to the gun-runner. Stake-out and pursuit of the gun-runner and his partner leave Vecchio making the difficult decision whether to arrest the driver he feels himself in love with.