Gunpowder

Following the death of Elizabeth I, King James of Scotland claims the English throne, and the country goes to war with Catholic Spain.

Catesby returns to London, where he and his co-conspirators convene for the first time. However, the King's spies are closing in, and a bloody clash places the plot in jeopardy.

Catesby and his gang load the tunnels below Parliament with gunpowder, but across the city, Father Garnet faces pressure to betray them to the authorities.