The shattered remains of Doctor Neo Cortex's space station crash-land on Earth and set free a powerful entity known as Uka Uka, the mastermind of Cortex's previous schemes.[12] He regroups with Cortex and additionally recruits Doctor Nefarious Tropy, the inventor of a device named the Time Twisting Machine which will allow Cortex's minions to collect the Crystals and Gems from their original places in time. At the home of the Bandicoots, Aku Aku senses Uka Uka's return and informs the Bandicoots that Uka Uka is his evil twin brother, whom he had locked away long ago to defend the planet. He then leads the Bandicoots to the Time Twisting Machine, which they can use to collect the Crystals and Gems before Cortex does so. Crash and Coco venture throughout time and defeat such adversaries such as Tiny Tiger, Dingodile and Doctor N. Gin. The defeat of N. Tropy causes the Time Twisting Machine to gradually fall into disarray.[15] Upon the defeat of Cortex and Uka Uka, the Time Twisting Machine implodes and traps Uka Uka in a timeless prison with Cortex and N. Tropy who have been turned into infants.