It is 1943, and Captain Hook is at sea aboard a hijacked German U-boat. Hook has heard all the Peter Pan-themed jokes and, as he sets off for La Rochelle, he's using them himself to boost morale. For he and his motley crew are risking everything to destroy German U-boats...and escape with their lives. It's an all-or-nothing mission that will push the entire crew - even Hook - to the very edge of their comfort...