The plot was that the Evil Twins and the Ants were taking over the world and Crash had to travel to different planets in different dimensions using the Psychetron. Most of the enemies set to appear can be seen in Crash Twinsanity's concept art (the Goat King, rock bees, etc). The known worlds that were set to appear are: a fish-people inhabited world, a planet known as Gaudi, and a place called the "Hanging City", where the rich people live in the hanging part and the poor live in the slums below.