The mother of the Robinson family and her son are looking for her other son. On a hiking trail, they see the men in suits using some sort of tracking device. The mom and her son follow them in secret.
The men shoot the creature from afar and then the mom and her son find the men pointing their guns at them. They escape after a narrow chase and assume that their son was killed by the rabid creature.
The Robinson family decides to drive home immediately, but they notice a black van following them. The van pulls up next to them and knocks them off the road. The family sees the hologram fade as they go outside the bounds and die.
The Robinson's son who is lost, and who they thought was dead, is still wandering around the bottom of the grand canyon.