"I'll have to hang up." Otto hung up and quickly headed over to his subordinate. "What's going on?"

The subordinate pointed at the truck on the computer screen. "This is the truck. It headed north after coming out of the oil refinery. Then, it made rounds around the industrial area. In the end, it entered this abandoned factory."

The industrial area had complex roads, not to mention the constant trucks going in and out. The trucks all looked the same too.

It was really challenging to locate o