"If this Works It'll be a Miracle!" (Millenium Crossover)
Blue Beetle and Mr. Miracle devise a machine that may help the heroes reach the Manhunter Mothership at the Earth's core, but their test run is interupted by Manhunter Agent Overthow and a platoon of Manhunter robots. The two heroes need to act quickly to escape their deathtrap and neutralise the Manhunters.