Guinevere is locked in the Dark Tower 

While visiting her father’s grave, Gwen is separated from her protector knights and brother Elyan when she is set upon by a nest of snakes, the work of Morgana’s dark magic

While the knights return to Camelot without their mistress, Morgana takes Gwen to the fabled Dark Tower, much feared by the knights, and locks the young queen in a darkened room.

Meanwhile, Arthur, Elyan, Merlin and a handful of knights set out to save the damsel in distress, but soon come across an impenetrable forest. Can they find a way through and reach Gwen before Morgana’s twisted mind-games send her mad?

Sounds like a plan.

Ooooo sounds good :) I'm happy now that it's classified that gwen a visiting her fathers grave. It's gonna be a good episode!!!