Mon-El's parents arrive to bring home and help restore Daxam to its former glory... and Supergirl realizes that Mon-El has been lying to her. Meanwhile, Winn discovers that Lyra has set him up when he's the prime suspect in a museum robbery. The Music Meister puts Supergirl into a coma and the story line concludes in The Flash: "Duet", Season 3, Episode 17.