Jules Hudson and his team are off the Isle of Wight diving on HMS Borealis, a ship from Convoy Peewit, sunk in the opening stages of the Battle of Britain.
With unseen colour film from 1940, Jules tells the hearbreaking story of two pilots killed in the Battle of Britain, and the glamorous woman at the centre of both their lives.
The team head to Chesil beach as they attempt to recover the remains of an RAF Hurricane fighter plane shot down in August 1940, at the height of the battle.
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Ready to Watch Dig 1940, Season 1, Episode 2?