SEASON: 1
SYNOPSIS
July 1940. In the North Atlantic, a British escort pins down one of Germany's top U-boat captains. Otto Kretschmer and his crew face a barrage of underwater bombs that test their spirits and their submarine. U-99 survives the onslaught and its emboldened commander forges a reputation as a daring tactician who outperforms his fellow captains in Germany's first successful submarine Wolfpack attack. The Allies strike back with new anti-submarine technology bringing a high-stakes battle with Germany's U-boat aces to a dramatic climax.