Portal 2 Lab Rat follows the story of Doug Ratman. Ratman is a hard-working scientist at Aperture Science Laboratories. He has lurked the depths of the test chambers leaving his mark where he see fit. Then lending a helping hand to test subjects in need. The test subject that has stood out the most, is Chell. He has helped her from the shadows while she destroyed Gladdos, then put her into the long sleep for when her time would come again. Her time has now come, and you must help her escape from deep under ground to the bright, burning, sunlight at the surface.
Ever wonder where all of those Aperture Science workers sat and worked? So have we! Here is a shot of some of their work places, freshly abandoned from a work issue.