Maddie Minter- Simons sister who has recently move to London due to family issues and is currently living with Simon and his freinds the sidemen who has a crush on JJ but fears to admit it due to embarrassment and disapproval of Simon. KSI (JJ) - Simons best freind who has a crush on Maddie but dreads to admit it because he thinks she doesn't like her back. But will that all change one night at a party? And will JJ and Maddie ever fall in love?