Following in His Footsteps

 is a Fallout 3 quest. It is also an Xbox 360 achievement.

This is the quest to find James, the Vault 101 Dweller's father, James, who mysteriously disappeared from Vault 101.

Objectives and walkthrough
Investigate the nearby town of Megaton for information about Dad.

Further investigation leads you to Vault 112 where Dad is trapped inside the Tranquility Lane virtual reality chamber.