On “Arcadia,“ Molly discusses the women and relationships in his life. He describes his girl as an alien throughout the song, pleading her to "take [him] to [her] universe.” The song is produced by his long-time collaborator ProdByCade.

The song was first teased by Molly on Instagram on August 22, where he posted the cover art along with the release date.

The song was released as a single on August 30, 2019, and is expected to land on Molly’s upcoming album Peak of Molly.