The Castle of Clouds is somewhere with a portal home that the heroes failed to return through. The despondent heroes discuss their failure while Presto gives Eric a haircut and Bobby grooms Uni's mane.
Eric: If we'd just made it through that portal in the Castle of Clouds.
Sheila: Yeah, another chance to go home gone up in smoke.
Diana: Come on, guys, it wasn't anybody's fault. Besides, we'll find another portal.