The film follows Linda (Watson), a crossword enthusiast, choral society member, wife and mother of two, and her music lecturer husband, Jim (Grant), who are about to celebrate their 30th wedding anniversary with a romantic trip to Lisbon. But the night before they travel, Linda discovers a monumental secret that will shake the very foundations of their marriage. Determined not to let this discovery define her life and needing space to process, Linda takes the plane tickets and flies to Lisbon wi...