Tate Donovan, Christina Chang

Tate Donovan and Christina Chang are leaving ABC's upcoming superhero drama No Ordinary Family.

The dual exits are story-related, a source close to the show told TVGuide.com, adding that producers would like to bring Donovan and Chang back as guest stars in the future.

ABC orders No Ordinary Family for fall

"We can't say it's for sure because we don't know if they're going to book another gig in the meantime," the source said. "There is no recasting. It really is a case of there was nowhere for them to go."

The Greg Berlanti-produced series revolves around a family with superpowers, headed by Michael Chiklis and Julie Benz. Donovan played a mysterious pilot, while Chang played a cop at the precinct where Chiklis' character works as a sketch artist.

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No Ordinary Family will air Tuesdays this fall at 8/7c.