Alex Mercer. Also known as Blacklight or Zeus. A living, breathing bioweapon capable of becoming anyone and using his body as a weapon. What if one day, he wasn't in Manhattan anymore.

What if he was in a completely different universe?

Confused and needing answers, Mercer must search for a way back. But, that isn't his only issue. Queen of the changelings, Chrysalis, is plotting to take Equestria by force. How will Mercer fit into these plans?

A Prototype and MLP crossover. It is set just after Mercer had just retrieved Dana from the hive.