The music-loving inhabitants of Pepperland are under siege by the Blue Meanies, a nasty group of music-hating creatures. The Lord Mayor of Pepperland (Dick Emery) dispatches sailor Old Fred (Lance Percival) to Liverpool, England, where he is to recruit the help of the Beatles (John Lennon, Paul McCartney, George Harrison, Ringo Starr). The sympathetic Beatles ride a yellow submarine to the occupied Pepperland, where the Blue Meanies have no chance against the Fab Four’s groovy tunes.

Paul McCartney wrote the majority of this song. He explained shortly after it was released in 1966: “‘Yellow Submarine’ is very simple but very different. It’s a fun song, a children’s song. Originally we intended it to be ‘Sparky’ a children’s record. But now it’s the idea of a yellow submarine where all the kids went to have fun. I was just going to sleep one night and thinking if we had a children’s song, it would be nice to be on a yellow submarine where all your friends are with a band.”

Paul purposely used short words in the lyrics because he wanted kids to pick it up early and sing along.