"The Lion in Winter" is a historical play by James Goldman that premiered in 1966. Set during Christmas 1183, it revolves around the complex relationships within the Plantagenet royal family, particularly between King Henry II and his wife, Eleanor of Aquitaine. The play explores themes of power, betrayal, and familial conflict as the couple and their sons vie for the throne. The narrative unfolds in the castle of Chinon, where the aging king must decide which of his sons will inherit the kingdom. The dialogue is sharp and witty, revealing the characters' ambitions and rivalries. The play has been adapted into a successful film and remains a significant work in American theater.