The girls follow an app promising future success, but can they resist their weaknesses?
Martha and Ollie are confident they can win the McSherman Science Prize, but they have one tricky formula to work out - how to subtract Rob from their team without losing Lily.
It's Halloween and Jas goes to extreme lengths to cure Lily's many fears before her scary party, while Ollie falls in love with new girl Em.
Lily, Martha and Ollie become prefects and the power goes to their heads, meaning Rob may not be able to play an important football match. Jas and Sid lead the resistance.
Lily plans a perfect date night to celebrate her anniversary with Rob, but her mum and Ken might ruin everything. Meanwhile, Martha reluctantly agrees to a tech detox.
Lily and Jas fake a falling out to get Rob and Sid to stop arguing, while Ollie and Martha train Mr Malone to be a better teacher.
Rob enters a modelling competition and Lily is determined he will win using 'the look'. Martha practices dating, only her lovestruck date Rufus doesn't know it ...
Snobby Ollie mocks Mr Malone's ancestry, inspiring the gang to teach him a lesson. Then when Ollie discovers he's actually related to Mr Malone, his dreams begin to un ...
Lily's gut instinct tells her that fellow pupil Carla fancies Rob. Rob denies this but Lily sets out to prove her gut instinct is correct with the help of Martha.
On the day Martha asks Lily for the 7p she owes her, Lily inherits a lot of money. Determined to prove Martha is petty, Lily decides to share her wealth with everyone.
Lily has a big announcement - she's going to tell Rob she loves him... but first she's going to build him a football stadium out of lollipop sticks. Easy (not easy)!
Ollie, Rob, Jas and Sid enter Battle of the Bands with tuneless Mr Malone! Lily wants her mum's boyfriend Ken to like her, and Jas tries to introduce boyfriend Sid to her dad.
Martha is offered a place at Greatacre, the boarding school her mother once went to. Ollie can't cope with the idea of Martha leaving and Alfie also goes overboard mourning ...
Martha and Ollie's team always comes first in the school's general knowledge quiz. Lily is determined that this year she and Jas will beat Martha and Ollie. However, b ...
Lily is delighted when Rob buys her a present for the first time - only it's a horrible bug-shaped brooch! Jas offers to break it accidentally-on-purpose so Lily won't ...
Lily worries that Jas is feeling left out. With Ollie and Martha practically a couple as well as her and Rob, she decides Jas needs a boyfriend. When she hears Rufus talking lov ...