Ida is an architect, childless, and in her prime, but lately the warning signs have become too different to ignore. To be safe, she has explored the possibilities of freezing her eggs for her later use, should she meet the right man. Now summer is here, and Ida is on a bus heading south to her idyllic family cabin by the sea, where her mother will celebrate her 65th birthday with her little family. Everything seems set for a perfect summer weekend, but then Marthe, Ida's younger sister, breaks some news. Adults is an uplifting, funny, and unexpectedly devastating tale of a dysfunctional modern family.