Calum Hood, bad boy of the school with an extremely dark past, ends up with the girl he least expected, and the girl he hated most. No matter how hard he tries to push her away, she always finds a way back, fighting to help him escape his awful memories.

Calum Hood. The cutest boy you know. You thought he forgot about you but he hasn't. He is back from his tour and you are falling in love all over again!

Your a Michael's no Luke's girl no Calum's girl no Ashton's girl guys I'm a Calum's girl yes I never had my first kiss i will be your kiss said Luke ok kiss me but not now Katy will you be my girlfriend oh um no what I'm Michael's girlfriend what !! All we been though I kissed you you kissed me and your taken wow your cooler then I thought you a play girl you a two timing monster we we can never talk again Luke where are you going to Michael's house to yell at him and I call dibs on you not him ok not ok p.s I do love you but not now what will happen next read on to find out

"Hopefully being roommates will settle your arguments."

Allie has moved halfway across the world because her mother got a job offer in Australia. At first Allie wasn't so thrilled about the idea of being in a new place, especially a different country. But when she meets a boy that lives next door, things start to change for her.

Alissa Evans is literally 5 Seconds of Summers biggest fan. She has been with them from the beginning but starts to get sick of their growing popularity. After not speaking with them for months, will a few tweets change everything? Follow Luke, Calum, Ashton, Michael, and Alissa as they ride on a roller coaster filled with crazy fans, music, fights, and even a bit of romance.......

Hailey Underwood has always dreamed of becoming a famous singer and go on a world tour that's why she made a YouTube channel to make covers and try to get notice. What will happen after when 5 Seconds of Summer's Calum Hood finds out about her and asks her to join them on tour to open for them will they fall in love or will they just stay as friends? Keep reading to find out.

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.

Michelle is a senior in her school, she has a boyfriend, Joshua. On the first day of her Third year in school, she sees something unexpecting which makes her really upset and believes that she'll never love again until she meets the one so caring Calum Hood. Read to find out more :-)