The pint-sized heroine is pitted against the plots of three duplicitous dunderheads: the Trolls of Gizmo.
Alva must decide whether to spend her money on a game. In Gizmo, Mayor Garth begins spending all of the town's money on jewellery for himself. (S1, ep 1)
Alva's not convinced by the latest big trend. In Gizmo, Mayor Garth feels the same. Will they follow the fad, or can they be happy being themselves? (S1, ep 2)
Alva discovers that sharing personal information online is unsafe. In Gizmo, the trolls try to disrupt things when they get the key to the Gizmotron. (S1, ep 3)
In Gizmo, Mo and the Blobbos are acting strange. They've been infected by Troll dust, and they need an Oolie Helper to clean them up. (S1, ep 4)
In Gizmo, Alva must get the Oolies to spend time away from their games before they miss the annual Gizbow. (S1, ep 5)
Who's the Oolie?: Dad warns Alva about identity theft, and when she encounters it in Gizmo she must use all her Oolie knowledge to stop the identity robbing Trolls! (S1, ep 6)
The Trolls are sick, which causes them to be exhaustingly sweet and energetic. Alva must find the cure before they completely tire out the Oolies. (S1, ep 7)
It's never okay to hide behind a mask and be mean to people. Alva and the Oolies must learn to 'stop, block and tell' when mean comments are made. (S1, ep 8)
Mayor Garth can't refrain from singing out the Spring-a-Ding password. Alva must figure out how to reverse the effects in order to save Spring-a-Ding! (S1, ep 10)
Is Alva's Dad inadvertently spreading fake news? In Gizmo, the same question could be asked about the mysterious and mischievous new town crier. (S1, ep 11)
Alva and Mayor Garth keep getting side-tracked by notifications and Troll distractions. Until they learn to switch them off, they won't get any work done! (S1, ep 12)
At home and in Gizmo there are too many choices! The Trolls try to mislead Garth, will Alva help him to find the path back to Ooliefest in time? (S1, ep 13)
Alva learns the importance of saving her work often, and teaches Oolie Bean the same lesson as he struggles to save his symphony to his memory bank. (S1, ep 14)
At home, Dad cautions Alva about uploading photos online. Alva passes this advice on to Mayor Garth as his new portrait is unveiled to all of Gizmo. (S1, ep 15)
Alva must decide whether to post her secret den photos. In Gizmo, on Garth's Day off the trolls keeping finding where he is. (S1, ep 16)
Alva learns the internet can be like a maze. In fact, it is just like Mayor Garth's new maze in Gizmo after a mischievous troll messes with it. (S1, ep 17)
In Gizmo, Oolie Bean is doing up his flower patch to up its popularity, but he soon realises that it's more important that he likes it himself. (S1, ep 18)
Just because someone claims to be someone online doesn't always mean they really are. Alva and the Oolies must figure out who the real Snee-Zee is. (S1, ep 19)
In Gizmo, it's time for the Flungi-ning, a rare and secret event. The trolls try to find out the location by tracking Alva and the Oolies. (S1, ep 20)
The Flutter-Spy Effect: Alva finds an app that requires access to her microphone and camera. In Gizmo, the Trolls make a drone-like device that spies on you if invited in. (S1, ep 21)
Alva needs to tidy up, but she would rather play on her tablet. In Gizmo, Alva and Oolie Bean are meant to clean the Glowbos, but they get distracted. (S1, ep 22)
Alva, Nessa and Finn make an outrageous Clip Clop video, while in Gizmo, the Oolies explore FizzGizz. (S1, ep 23)
Nessa mistakes a drawing online as Alva's. In Gizmo, Alva and Mo help Oolie Bean get credit for his work when the trolls try to pass it off as theirs. (S1, ep 24)
Bye Bye to Buy! Buy!: Alva has found a perfect gift, but is everything as it seems? In Gizmo, Alva and Mo help Mayor Garth buy some important gifts before it is too late. (S1, ep 25)
In the real world, some odd questions appear in a quiz. In Gizmo, the Trolls use a device to discover personal information about the Oolies. (S1, ep 26)