 Billy and Pete are opening a new discotheque in Whitefish Falls featuring their own band The Thunderbirds. Billy tells Pete that Roger is bringing his cousin Sidney to stay at the lodge. Both boys are pleasantly surprised to find that Sidney is actually a stunningly attractive girl around their age. Sidney constantly puts down Rainbow Country while touting the superiority of her native Montreal. Billy and Pete take Hannah and Sidney to the disco where a hooligan from Serpent River named Bragon threatens to disrupt the teens  good time and tries to hit on Sidney.