Danny wants to get back to space. But his Grandpa, Arthur Bartlett, is dying in Phoenix, and his family must deal with that. The young fox and his family travel there, risking missing Danny's birthday with his beloved Uncle Mark, not that it could be what he wants with Mark in Criminal Rehabilitation.
But when they do get back into space, their new co-pilot, an older fox named Skip King, turns out to be someone nobody in the family expected.