A famous scientist has created a device to stop the aliens. Ironhorse has a little trouble believing it.

Ironhorse learns a valuable lesson about reading signs.

The boys just want to keep Janine safe. So they check out her dates.

When the aliens grab Karen, it is up to Ironhorse and Norton to slow Harrison's attempt at rescue down until help can arrive. But when the mission goes wrong, leaving Karen dead and Ironhorse wounded, the entire team suffers through the guilt over what they were forced to do.

An alien weapons drop in an derelict amusement park leads to Ironhorse and Blackwood playing a dangerous game of hide and seek.