Jake and Joan discover their father's presence nearby and decide to hide inside an unlocked luxury car to avoid danger. When a suspicious man finds them, he warns them about a device hidden in the car's exhaust, forcing Jake and Joan to flee. The man reports the incident to Mr. Gray, their father's associate, who narrowly escapes an explosion caused by the device. After canceling an important meeting, Mr. Gray orders an investigation to identify the saboteur and the children’s true connection to the unfolding threat, leaving their next move uncertain.