Lily, Martha and Jas are super-bright but socially awkward 13-year-old girls, trying to make sense of life, boys and fitting in. While other girls are going to parties, netball practice and sleepovers, our inseparable trio are busy with chess club, homework and Friday nights in watching documentaries.

The girls have teamed up to enter a National Young Inventors competition. Lily and Martha fall out when Lily leaves the team to join Matt's team, and Martha replaces Lily with supergeek Roxanne Bunce. Roxanne has recently returned from a science exchange programme in France, and during that time she has undergone a major transformation - the supergeek has become supercool, now calling herself Roxy. Matt Furnish falls head over heels for Roxy and comes to Lily for advice on how to impress her. So, Lily ends up giving the boy she likes lessons in how to chat up another girl. Meanwhile, Lily doesn't realise Jas in turn has been advising Roxy on how to secure Matt as a boyfriend. Show less