Visit the deep sea of human subconsciousness. Meet metaphysical entities and astral creatures, both fantasy and real. Dive through unexplored waters and to the ground of the ocean.
The very calm ambient music is combined with binaural beats of 5 Hz. This frequency fosters deep relaxation and sleep. It opens the doors to the subconsciousness. This can be used for self-programming or maybe wishful thinking.
Of course you may also want to watch the video just for fun, with no specific purpose like meditation or mental training. Then it is more about enjoying the visuals full of fractals and psychedelic effects - and relaxing to the recreational sound.