Rebecca Grace Irwin is the sister of Australian superstar Ashton Irwin. The pair have been seperated for the past six years since their parents divorce. Rebecca has been living with her father whereas Ashton chose to live with his mum in sunny syndey... before the whole band thing anyway. Many things have changed since they last saw each other but Rebecca certainly didn't expect to have this kind of summer.

Kelsey is Ashton Irwin's sister. He likes to keep her more of a secret to protect her, as she is quite fragile, medically. When she finds out that she only has six months to live, Ash invites her on tour with 5SOS. When she falls for one of the bandmates, how will either of them handle the heartbreak that is to come? (Takes place a few years in the future)