After the Hypnotoad mesmerizes Professor Farnsworth into ordering the Planet Express crew to make a "delivery" to the amphibian homeworld Amphibios 9, the Hypnotoad tears through timespace to an alternate universe, bringing a female Hypnotoad to the current universe. This scatters the universe and all its inhabitants except for Fry and Nibbler. With the help of Nibbler, Fry must help put the universe back together and save his friends, particularly Leela, rebuilding New New York and bringing back key sought-out characters along the way. Source: Wikipedia, "[en.wikipedia.org/wiki/Futurama%3A_Worlds_of_Tomorrow Futurama: Worlds of Tomorrow]", available under the CC-BY-SA License.