Just when Sam has got used to her sister Danni's pop-star status, and being constantly followed around by a reality TV camera crew, her life is taking yet another twist. While Danni is bad-mouthed in the press by rival singer Harley, Sam discovers that they have a granddad they never even knew about. Cue a trip to England to visit their long-lost relative - but when Danni's agent gets involved, the trip turns into a disaster, and Sam just can't seem to help making things worse!