Lt. Terry Clayton of the 7th Mass arrives with word that the aliens are on their way to attack the 2nd Mass. Clayton’s plan to lead the children to a safe haven while the adults remain behind to fight is met with some resistance from the parents, including Tom.

Longworth investigates a murder in Gibtown, a community populated with human sideshow descendants, and everyone is a suspect. Jim and Callie try to figure out the exact meaning of their relationship.

The presenters manage to finally find a good use for caravans after they try to make train travel cost less, faster and more interesting. Rowan Atkinson is the celebrity behind the wheel of the Reasonably Priced Car this week. Jeremy gets the chance to test drive the Jaguar XKR-S and the updated Nissan GT-R to compare the two cars.