"Once Upon a Time" released its trailer for Sunday's (March 13) episode, entitled "Labor of Love." For the first time since it was announced that the season will be featuring Disney's "Hercules," fans are able to see how the show will portray the titular hero.

The video opens with Snow White (Ginnifer Goodwin) and Prince Charming (Josh Dallas) standing over a grave in the UnderBrooke cemetery in the Underworld. There lies Hercules (Jonathan Whitesell) with dark brown hair and not so big muscles. Sorry, fans of the film.

RELATED: 'OUAT's' Underworld sneak peek: We're not in Storybrooke anymore

Additionally, Snow knew Hercules from way back when. She tells Charming that the two were childhood friends.

"Hercules! He can help us," says Snow. "We save him and he can save us!"

Fans are in luck for something else that stays true to the film. That three-headed dog that Hades kept in his lair returns to the TV adaptation.

Meg (Kacey Rohl) also appears and is still enslaved to Hades (Greg Germann). Luckily for her, Hook's heroism kicks into high gear as he fights off the six piercing eyes from the shadows.

It is not yet clear whether or not Meg can be fully trusted from the sneak peeks. In the Disney cartoon, she was just a tool that Hades used to lure men. It appears that she still has that talent when it comes to Hook.

Hercules and Meg definitely have unfinished business in the Underworld. See how the drama unfolds in the upcoming episode.

"Once Upon a Time" airs Sundays at 8 p.m. on ABC.

Posted by:Mannie Holmes