The setting for Evolution is TRON: Legacy's "Grid" system during 1989, just as the events presented in that film begin to take place. Kevin Flynn has recently discovered ISOs on The Grid; ISOs are Programs that have apparently created themselves, and possess unique characteristics above and beyond that noteworthy trait. While Flynn sees them as a miracle, some normal Programs on The Grid resent them, and infighting between the two groups of applications has begun to flare up. In an effort to prevent a digital race war, he organizes a ceremony where the leader of the ISOs, Radia, is named co-system administrator alongside Clu, an upgraded version of a Program that Flynn wrote to use against the MCP in the first Tron film. As a security Program named Anon, you are created to guard the ceremony and help Tron - the same Program from the first film - maintain The Grid.