The door with the scimitar

After a moment of hesitation you decide to try the door with the scimitar. The silver key fits perfectly and with a quiet click the door unlocks. With your sword at the ready you walk through it...

...and find yourself in a room very similar to the one you just left. Only this one is almost twice as big and instead of circular it's hexagonal. In the middle of each of the six walls is an wooden door. The door through which you entered is the only one currently open.

But the doors barely register in your mind. Your attention is focused on the battle taking place in the otherwise-empty room: Three orcs wielding scimitars and wearing nothing but loinclothes versus an armored person - likely a knight - wielding a short sword. A broken spear and a broken shield can be seen on the ground near the combatants. The orcs have their backs towards you and the armored person is focused entirely on them, so your arrival has remained unnoticed. You could go back and try another one of the four doors, you could try to leave through one of the closed doors, or you could join the battle, using the element of surprise to give you an advantage.