Barney Ross leads the “Expendables”, a band of highly skilled mercenaries including knife enthusiast Lee Christmas, martial arts expert Yin Yang, heavy weapons specialist Hale Caesar, demolitionist Toll Road and loose-cannon sniper Gunner Jensen. When the group is commissioned by the mysterious Mr. Church to assassinate the merciless dictator of a small South American island, Barney and Lee head to the remote locale to scout out their opposition. Once there, they meet with local rebel Sandra and discover the true nature of the conflict engulfing the city. When they escape the island and Sandra stays behind, Ross must choose to either walk away and save his own life – or attempt a suicidal rescue mission that might just save his soul.
Mr. Church reunites the Expendables for what should be an easy paycheck, but when one of their men is murdered on the job, their quest for revenge puts them deep in enemy territory and up against an unexpected threat.
Barney augments his team with new blood for a personal battle: to take down Conrad Stonebanks, the Expendables co-founder and notorious arms trader who is hell bent on wiping out Barney and every single one of his associates.