As the war nears its end, an unorthodox, top secret commando unit launches a nighttime raid on a shallow lake in Northern Italy, to divert German forces from the next major Allied offensive. Led by Danish Major Anders Lassen — a fearless, hard-drinking brawler with an amphetamine addiction — they find themselves pinned down in unforgiving terrain, and must push through murderous German opposition, while the fate of the entire Allied assault hangs in the balance.