The Gunpowder Plot was a failed conspiracy in 1605 aimed at assassinating King James I of England and blowing up the House of Lords. A group of Catholic conspirators, including Guy Fawkes, sought to end Protestant rule and restore Catholic leadership. They planned to ignite barrels of gunpowder placed beneath the House of Lords during the State Opening of Parliament. The plot was discovered on November 5, 1605, when authorities received an anonymous tip-off. Guy Fawkes was arrested while guarding the explosives, leading to the capture of other conspirators. The event is commemorated in the UK as Guy Fawkes Night, marked by fireworks and bonfires.