Two Tarpas aliens have tried to invade Earth by landing in a reception room on a Moon base. Despite their arrival, Luchini, whose live gig is about to start, heads for the door. Taken aback, the Tarpas question the importance of his role in the band and discover that Luchini is a mere MC. His job is to introduce the band members before they play and then to sit among the fans and pep them up.