Well, Tiny's character Darkside is going on an omnicidal rampage. He's using a weapon called the Siphon, which can convert acts of evil into dark energy. Thus, commiting endless atrocities, Darkside rapidly became more powerful, using large temples to store his power and focus it. This of course woke up all kinds of evil crap, the sheer amount of evil energy in the air awakening something called the Darkness. Effectively, the primordial lifeless darkness of space woke up and looked around. It's ridiculously dangerous, childishly naive, and ends life with it's mere presence.