I'm can be just as Medieval as you (Sockathan)

This is the Medieval AU (man, I'm doing a lot of Sockathan AUs XD)

Jonathan is one of the knights in Princess Magill (Lil) Nancy's kingdom. He has also been her best friend since they were little. On her seventeenth birthday, Lil calls her best friend back from battle because she needs him by her side when she finally turns seventeen Though, the monsters of the world become aware of this and show up to kidnap Lil during the jester (Sock)'s performance. Jonathan then decides he needs to get her back and asks permission of the king and queen to leave. The answer is yes, and only under one condition, he must take someone with him. And the only volunteer? The jester, Sock Sowachowski. Together, the knight and the jester go on to save Lil from the monsters who sought out to steal the light from the 'magical one', Princess Magill.

But, is Magill really the magical one that everyone in the world thinks she is? Or is someone else in grave danger?