"By golly! I've met all types of men, but never a rotting meat man. Welcome, Sir, to the land of Oz!"
Somehow a solitary zombie in a hot air balloon arrives in the land of Oz, spreading the zombie plague to the unsuspecting inhabitants. When the Tin Man is attacked by a group of zombies, who keep breaking their teeth on his metal body as he chops them up with his axe, he finds a metal pin bearing the crest of Ozma, the Queen of Oz. Realising the Emerald City is in peril, he sets out to warn his friends.
If you're a big fan of the Oz books, this comic might make you sad. You might love it, just be prepared for bad things to happen to some old friends. The art is beautiful, with a lovely Art Deco vibe that is amusingly at odds with the subject matter.
"Zombies! Braindead automatons and rotting reminders of man's hubris! Robots! Braindead Automatons and constructed remainders of man's potential!"
A couple of arrogant human scientists in an underground bunker open a portal to who knows where and one of them decideds to test it by going through it himself, because what could go wrong? Humanity being almost completely destroyed by zombies, that's what. It all comes down to the robots humans left behind fighting to defend the last living human baby against the zombies, desperate for the last edible brain.
Zombies vs. Robots is more or less what you'd expect from the title. The fact that Michael Bay's production company bought the rights to make a movie of it should tell you what you need to know about it.