Boy band The Wonderland come second in the biggest music show on TV, but judge Sasha Small decides to sign the winners – a girl band called Girls Here First – instead of them. Feeling disillusioned, the boys have to find the inspiration to carry on – not easy when Nathaniel's mum wants him to focus on his school work instead of his music, and confiscates his guitar. The boys meet Chloe, a vlogger who will prove instrumental in ensuring they don't give up on their dreams. 

Nathaniel's video of him singing at the GHF gig has gone viral, and he's feeling embarrassed. Fortunately, Harry and Oakley think they have some good news: AJ has got them a gig, only to discover it's a private booking for local businessman Hot Tub Tony. But it gets worse - Tony wants them to record a single with his daughter Rosie on lead vocals, a tone-deaf spoilt brat who's completely obsessed with Harry. Meanwhile, Chloe and Molly visit Sasha to try to get the embarrassing viral video removed – but almost end up getting cast in a GHF music video.