Here's the List of Cast. Come back here if you see a new name along the story.
Luke Hemmings as Luke Hemmings himself
Calum Hood as Calum Hood himself
Michael Clifford as Michael Clifford himself
Ashton Irwin as Ashton Irwin himself
Michelle (the @michellespersonal on Instagram) as Michelle Fritz
Arzaylea (the @arzaylea on Instagram) as Arzaylea
Shawn Mendes as Shawn Mendes himself
Magcon Boys
The Vamps
All Time Low
One Direction
The Wanted (Nathan Sykes mostly)
Chloe Sue
Ms. Sue, the school dean, Chloe's mum
Mark, deceased, Michelle's brother
Mr and Mrs Fritz
Liz Hemmings
Jack Hemmings
Ben Hemmings
Joy Hood
Mali Koa Hood
Karen Clifford
Eleanor, wannabe who Michael was getting cozy before they head out for tour
Stella, Michael's stepsister
Cheryl, under the same management of One Direction that Simon assigned to the lads to handle them while on tour with One Direction / acting manager