Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: Backstory The general plot of the game is that a team of four, an Alien, a Human, an Android, and a Psionic, have left Earth aboard a spacecraft on the basis of the planet's imminent destruction.

The general story of the game is that a team of four, an Alien, a Human, an Android, and a Psionic, have left Earth on a spacecraft escaping the planet's imminent destruction.