When Candace discovers that her mother is Lindana, Linda is invited to participate in a reunion concert of the '80s. Lawrence feels depressed because he thinks his wife will forget about him and meet exciting and fun people, so Phineas and Ferb decide to turn him into "Max Modem", an unknown singer from the '80s. Meanwhile, Dr. Doofenshmirtz wants Danville to believe that he's the king and leader of a group of aliens.