I Dreamed of a Circular Room, a Beast, and an Evil Barbie

I drempt of an odd dream I've had twice before with a room that was like a bath, water on the floor to the ankles, and I had to do this routine so nothing bad could get out and attack me. The shape of the room was a circle, with a smaller circle to the side of the room holding a beast and the rest of the room like a crecent with a door on either end. I had to collect all the little toys in the water snd get them out, then I had to defeat the monster in the mini room inside that same room and then lock the doors to it, and finally I had to convince the evil barbie doll I was its friend and I had to put it to sleep . Then I had to lock the two entrances to the entire thing and return back to my shower room with the toys I'd saved.