He says he's being held by the Locust - and he might have a secret that could turn the tide of the war. When you do so, you're met with a video of Marcus' father, who looks older, weaker, but most surprisingly, is still alive. Cutting back to reality, on board the warship Sovereign, you head to meet a character on deck, who hands you a disc, and advises you watch it.
Marcus, also then a member of the COG, was jailed and court-martialled for abandoning his post in an effort to save his father from the Locust attack - which ends in tragedy as the locust destroy a pillar, burying Marcus' father. The game kicks off with a flashback, as the main character, Marcus Fenix, reminisces about the death of his father. Having faced off against the Locust, an army of mutated aliens that burst out from underground, who in turn are fighting a civil war against the Lambent Locust, a group of Locust who've fallen foul of a mutation, which leaves them covered in explosive pustules, Gears of War 3 picks up as the storyline comes to a head, but also adds a more personal aspect to things. The story revolves around a team of COG marines (that's the Coalition of Ordered Governments to me and you), who're embroiled in a three-way war on an Earth-like planet named Sera.
