Approximately one-thousand years prior to the present day, a demonic alien beast fell to Earth in a meteor. Its influence reached out across the globe, driving the greedy-at-heart to its position.
In an effort to destroy the monster, a native of the New World fashioned an arrowhead out of the monster's meteor and tied it to a staff, making it into a spear. However, before he could kill the creature, one of those drawn by the monster, a European named C.F. Volpehart, killed the native and stole the spear.
In the 21st century, four mutant turtles descend into the creature's domain to rescue a man named Ryan. One of the turtles, Leonardo, finds the meteor spear and seemingly slays the monster with it. However, even after its defeat, it can still be seen corrupting a Wall Street businessman. The Darkness Within