You were an agent, like Leon. But you weren't trained to handle a situation like this. The agency left Leon in your care, just threw him in a cell at a containment center, and put your name as the caretaker. You never agreed.

The last time you saw Leon he was tired, but his normal self nonetheless. He was being sent off to Spain. And now your old partner was back, standing in front of you behind a thick wall of glass. Infected and slowly losing his sanity.