Undercover at the Academy, Dark Spyro hopes to find the location of Arkus by creating an app for Eon's phone that will brainwash him into revealing the secret. Meanwhile, Kaos thinks he's finally discovered the perfect evil way to serve Strykore.
The Skylanders realize there's only one way to cure Dark Spyro of his evil: they must steal venom from a family of vicious Fire Vipers in order to make a serum. However, it turns out the serum has some unintended side effects...
Hoping to become Kaossandra's protégé, Stealth Elf volunteers to accompany her on a mission, but a cursed bracelet turns Kaossandra from a willing mentor into an evil assassin.
Eruptor is convinced that Kaossandra is Strykore's evil spy and must be stopped, but when the two are abducted by mischievous trolls, they suddenly find themselves forced to work together.
When King Pen is kidnapped by Strykore, the Skylanders must put aside their search for Spyro and rescue their old friend. Meanwhile, Stealth Elf tries to help Kaossandra find her purpose now that she's on the good side.
In order to beat Strykore to Arkus, the Skylanders hatch a dangerous plan to rescue Cynder from the clutches of her evil father, Malefor. Meanwhile, Glumshanks tries to figure out how to break Kaos out of his underwater prison cell.
When a mysterious new villain destroys an island, the Skylanders bring Kaboom along in order to diffuse the villain's explosives. However, the Skylanders inflated egos may get in the way of victory and of discovering the identity of this new threat.
When it's discovered that Eon has been vaporized, Jet-Vac interrogates his three suspects-Dark Spyro, Stealth Elf, and Eruptor-who each tell their own wildly different version of what happened.