In 1946, the world’s most powerful fleet was assembled for one purpose: to be sacrificed. "Operation Crossroads" was a daring and controversial experiment designed to test if the world’s most advanced warships could survive the atomic bomb. Today, a high-tech expedition returns to the remote Bikini Atoll to explore the ghost fleet before it collapses into the abyss. From the legendary USS Saratoga to the Japanese flagship Nagato, we document the wreckage of a nuclear apocalypse and investigate the enduring, radioactive legacy left behind.