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?

In which Luke is in love with his best friend Victoria, who has a not-so-great boyfriend. Trying to navigate relationships, friendships and Luke's band rapidly rising to fame, will the pair remain friends, or become something more?

Francesca Naej Welch, a girl who barely cares about the world. She attends a new school in her Junior year and later grows unexpected emotions and thrill within herself as she breaks her own rule of keeping away from trouble and the good spotlight when she meets the boys of 5 Seconds of Summer. Her life suddenly branches out to paths of the unexpected events, one is falling in love with a member of the band, and the others are glitches that she would face along with the boys.

Hazel Francessca is the nerd. The one that everyone avoids at all costs. The one that walks alone down Lonely Avenue. But she doesn't mind. She actually likes it. Hazel always goes unnoticed, untill someone notices her. A black haired boy named Calum Hood. Will Hazel be able to handle her new found friendship? Or will she fall to pieces, return to her old ways and continue down Lonely Avenue?