Head to Power Plant & Find the Foreman
The mission begins at Town Hall. Your primary objective is to reach the distant power plant. It's recommended to activate the Bell Tower safe house as a checkpoint along the way, and best to find a vehicle to drive there since walking is extremely far.
Upon reaching the power plant area, you'll find infected everywhere. Clear or bypass them - your objective will update to 'Find the Foreman'. He's hiding on a building rooftop and requires a specific parkour route to reach.