Will Merlin embrace magic and save his friends?

The final showdown! The Slipskins have conquered the town, and it doesn’t look like Hector will be able to defeat them even with the help of the Plagues. Only Merlin will be able to tip the scales of the fight, but to do so he must stop being afraid and finally take control of the magic that frightens him so much! Will he be able to do it, or is this the end of their adventure?