Using resurrected scarab beetles, King Tut concocts an ancient mind control potion, abu raubu simbu tu. Chief O'Hara is the first under his spell, followed shortly by Commissioner Gordon, and when Batman himself is tricked into taking the drug, Tut's plan to control all of Gotham City by tainting the water supply seems close to succeeding.

Now in charge of the Gotham State Pen, Ma Parker and her jailhouse full of criminal cohorts use it as their base of operations. No one suspects jailed prisoners of the crimes, but a clue picked up by Batman and Robin may lead them right to Ma's whereabouts.