The Sylani are a group of faerie-like creatures who dwell in forests. They implore the Sorceress of Castle Grayskull to intervene on behalf of the last unicorn of Eternia, who is under threat from Baron Grod. The Sorceress agrees and sends Prince Adam, Teela, and Cringer on a diplomatic mission to save the unicorn.
The Sylani possess magical powers that can manipulate small items around them, such as fruit (and in one scene, the nose of Growler, Baron Grod's mechanical dog).