The enemy group called the Sixers is introduced. The Sixers were among the earlier colonists, but for reasons unknown, they oppose Terra Nova's existence, and broke away to establish a rival colony. When a captured Sixer escapes and attempts to assassinate Commander Taylor, Jim subdues the assailant, resulting in Taylor reassigning Jim to his security team. Josh is persuaded by Skye and her friends to sneak away with them from the Terra Nova compound into the forest. At a waterfall, Skye shows Josh what looks like some type of mathematical equations carved into the rocks. As night falls, they prepare to return to the compound, only to discover that their vehicle's power cells have been stolen by Sixers. When a pack of Slashers (a name given to the fictional Acceraptors) attacks, they have to be rescued by the Terra Nova security team.