After Isaac launches an emergency beacon crafted by Temple in the mining bay, the signal is tracked by USM Valor, but they succumb to the Marker's influence, having picked up Chen's pod, causing the Valor to crash into the Ishimura. Isaac and Hammond board the former to recover its singularity core and fix an escape shuttle Hammond found. Onboard, the two learn that the Valor had already been contacted by someone aboard the Ishimura and had orders to destroy the ship at all costs. The pair find the core, but Chen attacks Hammond, who sacrifices himself to kill Chen. Isaac retrieves the core and narrowly escapes the Valor before its destruction. Returning to the Ishimura, he encounters a guilt-ridden Kyne, who convinces Isaac and Kendra that they should return the Marker to Aegis VII to stop the outbreak.