"Hyper-Tension!, Part 5 of 5: Zero Tolerance"
Black Zero begins to move ahead with his plans to invade Superboys Earth.
Superboy and the Challengers attempt to free the Legion of Superboys.
Meanwhile Prof Haley attempts to convince Metron into helping.
The Superboys break free and battle Black Zero to a standstill with the combined use of their TK.
Suddenly the alternate Superboys vanish, sent home by Metron. Black Zero is pinned down by a Mother Box.
Superboy and the Challengers along with Black Zero, who is being brought along to be rehabilitated soon head home plunging into the Hyperium Reactor.
While in the hyperstorm Black Zero blows open a hatch, Red and June are swept out, Superboy rescues June but is unable to get Red. Holding the ship together with TK the heroes dissapear into a white light.
Meanwhile back at home Cadmus puts out a call for Superboys replacement.