Years ago, Barney Ross co-founded the Expendables with Conrad Stonebanks. After Stonebanks became an arms dealer, Ross was forced to kill him or so he thought. Now, Stonebanks is back and he's on a mission to end the Expendables. Ross decides that the way to fight old blood is with new blood, so he assembles a team of younger, faster, more tech savvy recruits. The battle to topple Stonebanks becomes a clash of old school methods vs. high-tech expertise.
Mercenary leader Barney Ross, Lee Christmas and the rest of the Expendables team reunite when Mr. Church hires them for a seemingly easy job. But things go terribly wrong, compelling the mercenaries to seek revenge for a comrade's murder. With the odds against them, Barney and his team are hell-bent on payback and cut a path of destruction through opposing forces, only to encounter an unexpected threat: six pounds of weapons grade plutonium.
A group of mercenaries is double-crossed during a mission and are approached by Church to overthrow the ruthless dictator of a South American country. It isn't long before the men realise things aren't quite as they appear, finding themselves caught in a dangerous web of betrayal. Although their mission is compromised and an innocent is in danger, soldier of fortune Barney and his comrades decide to get the job done.