"St. Patrick's Day" by Richard Brinsley Sheridan is a one-act comic play set in Ireland. It revolves around the antics of a scheming lieutenant who manipulates situations for his benefit. The plot unfolds as the lieutenant cleverly engineers misunderstandings and rivalries, ultimately orchestrating a humorous confrontation. Sheridan's witty dialogue and situational humor highlight human nature's folly, making it a delightful exploration of intrigue and comedic entanglements in a St. Patrick's Day backdrop.