While retrieving tickets for a hockey game at the Phoenix Foundation, MacGyver and his grandpa Harry get caught in the middle of a woman's plot to blow up the building using a bomb that she herself made. They try to escape, but are locked in. Now they must figure another way out before she activates the bomb.

MacGyver puts up Penny Parker for a few days while she's looking for a job as a singing telegram. But on her first day, she happens to witness two thugs torturing a man. Unfortunately, she can't find her way back, and when she does, MacGyver thinks this may be the start of something bigger as the victim is a Federal agent.