Baby Gargoyle and the eccentric Leonard have gone missing. Frank braved the lava to save them, but when the volcano went ka-blam, he couldn't make it through. The aftermath of the eruption finds Frank and his ragtag band of prehistoric refugees floating on a log down a river toward unknown lands and new adventures: an attack from an underwater beast, capture by cannibals, and wildest of all... a visit from Frank's grown-up self! Scarred, missing fingers, and just as absent-minded, will future Frank be able to save our young hero from making the same mistakes? Dive in as a rollicking new arc begins!