As for what the show is about, THR says the series will follow a straight-laced dad whose ex-wife marries a much younger free-spirited husband.
Just taking a look at Hornsby and Anderson, it feels pretty obvious which role is being played by whom.
It all depends on if this presently untitled project makes it to a full series order, as the potential series was added to the development slate just ahead of pilot season.
The two will share dad duties, and likely butt heads given their character descriptions.