Complex sentence: The plot is based around Yuri, the former head of the Soviet Psychic Corps, coming out of hiding to take over the world by using his Psychic Dominators, devices with the power to mind-control everyone in the world.
Split into simpler sentences: The plot is based around Yuri, the former head of the Soviet Psychic Corps, coming out of hiding to take over the world by using his Psychic Dominators. These devices have the power to mind-control everyone in the world.