Sombra had tried to use her shrinking technology to infiltrate an Overwatch base, but was caught by Tracer. Instead of turning her in however the giant brit found the thought of playing with the shrunken spy too tempting, and her mind turned to the uncomfortable seating that the base was stocked with. Sombra turned out to be quite an excellent cushion for Tracer's massive rear, with the giantess uncaring for how her ass smothered poor Sombra and ground her against the hard chair. The food from the cafeteria also didn't quite agree with her giantess captor, and Sombra had to endure countless blasts of disgusting stench while flattened beneath Tracer's weight. Tracer planned on finally handing her in once administration brought in the new cushioned chairs they had been promising, but knowing the speed of Overwatch bureaucracy that probably would take a while. Plus she felt so nice trapped under her she might just have to bring her home and tape her to her computer chair, although her tiny tush toy probably wouldn't like how often she sat there bare-assed...