What a fun movie. Reminds me of the stuff I'd dream up when I was a kid. Minus the bullying part since I don't recall ever being in that situation.
Anyway, the main kid Alex always gets bullied by some lame junior high kids and eventually makes them his allies after some demons attempt to take their life. They eventually go on meeting the wizard Merlin who drinks blended fried chicken to restore his powers.
Afterwards, they go and save the world from some witch that was banished to what looks like the core of the earth by the original King Arthur ages ago. They save the world and blah blah blah.
Either way, underdog feel good movies are always my cup of tea.