Adam is tossed into this alternate universe through a mysterious portal, which lands him in the prehistoric Lost Valley - but he quickly gains the attention of various heroes, including Dr. Quest, his son Jonny, Jonny's friend Hadji and Race Bannon.
Of course, there are bad guys and dinosaur peril to be dealt with - but it's all handled in a cookie cutter fashion.
It's not bad at all - it features excellent art by Steve Lieber and Veronica Gandini, and the story is all good fun - it's just not the event I would have expected from such a crossover.
The backup story is - frankly - a stinker, as Top Cat is brought to the DC Universe for a short confrontation with Batman. It somehow manages to denigrate both characters at the same time.
T.C. works best in his own alley with his friends - not slinking through the alleys of Gotham City.