NOVA follows the epic operation to secure, raise and salvage the Costa Concordia cruise ship, which ran aground and tragically capsized off the coast of Italy on January 13th 2012, killing 32 passengers. Moving the ship - which stretches the length of three football fields, weighs over 114,000 tons and lies half submerged on the site of a protected reef with a 50-meter long hole in its hull - from its precarious perch on the edge of a 60 meter high underwater cliff will be a huge technical and logistical challenge. Now, NOVA joins a team of more than 500 divers and engineers working around the clock as they attempt the biggest ship recovery project in history.