Superman - The Shadow Masters (DC Comics Super Heroes)

When the electricity in Metropolis suddenly goes out, Superman quickly locates the problem. It's Acrata, a super heroine who can teleport through shadows. She insists that the power must be shut down or the planet will be doomed. Superman isn't convinced. He stops Acrata but soon a new problem arrives. The evil Eclipso appears, threatening to take over the world! Superman and Acrata must stop him from casting his shadow over Earth.