Two worlds collide. Once again, mad scientist, Dr. Merlot is creating an army of mutated Grimm, but this time he is not alone. Meanwhile, our young heroes are trying to stop a sorceress from creating an age of darkness.
After crashing the bumblebee Yang and Ruby end up inside the watchtower, how will this world react two two Hunteresses? How will KF react to another speedster and how will the villains fight two more super powered teens?