animated craziness

there was like this long 3 part movie and i was in it it kept saying south park but nah it was animated more like 3d anime and the most elaborate shit was going on like parties and dance battles idk how to explain it lol at one point there was this elaborate animation sequence where there was like a super detailed celtic hammer being built in real time or just appearing out of thin air, and it kept zooming out to reveal more and more layers. it was a bunch of different things but ended up being a giant celtic door with the hammer really tiny in the middle. and it was caging some sort of underwater beast or god