Borderlands 2

Borderlands 2 is the second installment of the Borderlands video game series, and is followed by 2K Australia's Borderlands: the Pre-Sequel.

Plot
"So, you want to hear another story, huh? One where the very fate of Pandora hangs in the balance? If not, too bad - I'm telling you anyway. First, there was the Vault, an alien prison opened with a mystical key. To the warriors who opened it, the Vault was just a container of tentacles and disappointment. They vanished into the wastelands, certain that the Vault held no treasure at all. They were wrong. The Vault's opening triggered the growth of Eridium, a priceless alien element. Soon, the rare and valuable mineral emerged all across Pandora. Its appearance attracted many. Including... the Hyperion corporation. They came to Pandora to mine Eridium, and bring order to the savage planet. Through their excavations, Hyperion uncovered evidence of an even greater Vault. Their leader vowed to findu it - to use its power to civilize the Borderlands once and for all. But Hyperion weren't the only ones searching for the next Vault's alien power. The call of danger and loot is not so easily resisted. Certain warriors came to Pandora in droves to uncover its hidden secrets. Some would call them adventurers. Others call them fools. But I... call them Vault Hunters. Our story begins with them and with a man named Handsome Jack..." - Intro to Borderlands 2 by Marcus Kincaid

While this intro would seem to set the player up to assist this Handsome Jack it becomes rather apparent that such expectation is false. The proceeding video clip shows Handsome Jack's attempt at killing the main protagonists; Axton, Maya, Salvador, and Zero before game play commences. Our hero (or heroes in a multiplayer game) quickly find themselves working for the resistance to defeat Jack's army of robots before Jack can use an ancient alien warrior to become the unopposed dictator of Pandora.