It's all in the mind y'know!

The wicked Blue Meanies take over Pepperland, eliminating all color and music. As the only survivor, the Lord Admiral escapes in the yellow submarine and journeys to Liverpool to enlist the help of the Beatles.
In Yellow Submarine, consciousness is carried by monsters and creatures — a plane of “psychedelic music utopia”. The story fights on E9/E10 of the E0–E14 reality ladder, compressing prejudice, authority, love, music, rebellion.