Mrs. Incredible faces an unwelcome figure from her past plotting to destroy all of Europe; what’s worse, they share a secret history she doesn’t want Mr. Incredible finding out! Will the mysterious Mirage keep her secret, and can she be trusted to watch Mrs. Incredible’s back? Meanwhile, Mr. Incredible and Frozone take it upon themselves to train Dash, and Violet makes a mistake that may have unexpected consequences for the Parr family.