"A Flea in Her Ear" is a classic French farce that revolves around misunderstandings, mistaken identities, and convoluted plots, all set against the backdrop of Paris in the early 20th century. The story begins when a wife suspects her husband of infidelity and sets a trap to catch him in the act, leading to a series of comic mishaps involving a lascivious hotel, a cast of eccentric characters, and numerous doors that continually open and close, creating a whirlwind of hilarious encounters and narrow escapes. The play is celebrated for its intricate plotting and its breakneck pace, making it a staple of comedic theatre.