HMS Queen Elizabeth continues her journey to the South China Sea, but rampant Covid on board means she is not allowed to come ashore for any of the planned port visits. Sailing past Singapore and Hong Kong, the ship has become a floating prison, isolated on the high seas. Her dedicated supply ships do their best to keep the Queen Elizabeth topped up with food, fuel and ammunition. As the QE and her escorting destroyers and frigates enter the contested and potentially dangerous waters of the South China Sea, the Chinese Navy react by probing her with submarines and surface warships. Anti-submarine helicopters launch continually in order to identify, track and see off the subsurface threat