Things change, from when you were young. Once, Delilah Cook lived in Sydney, was best friends with a boy called Luke Hemmings, and had big dreams of being a singer. Then the terrible, tragic and unexpected happened. Now, Delilah lives in Melbourne, is recently signed music artist, has a best friend named Emilia Jones and doesn’t think about Luke anymore. At least, that’s what she tells herself. But when Delilah finds herself on a tour with the 5SOS boys of her past, what could possibly go wrong?

Leah Burns just moved from Melbourne to Sydney. She wasn't the most innocent girl at her old school but she hopes the move will help her forget her past. She wasn't expecting to make any friends but when she meets Michael, a cute boy who's in most of her classes, and his friends Ashton, Calum and Luke, she realises that maybe life isn't all bad.

Sure, there are loads of other girls more than willing to romantically attach themselves to /the/ Luke Hemmings; accomplished vocalist and guitarist, but Luke doesn't want just any girl. He wants Kelsie. Only problem? Her best friend Calum is the bassist in his band.