The investigation teams set out to the other portals that had been opened across the world. They found that the symbols and energy sources were the same at all of them. They also discovered that the portals were connected to each other, and that they were all controlled by a central source.
The group realized that if they could find and destroy the central source, they could close all the portals and stop the monsters from coming through. They decided to send a team to track down the source and put a stop to it.
The team set out on their mission, using all the information they had gathered to track down the source. They faced many challenges and obstacles along the way, but they were determined to succeed.
Finally, they found it. The central source was a huge machine, located deep in a underground facility. They could see that the machine was powered by the same energy source that they had found at the portals. They knew that if they could destroy the machine, they could close all the portals and stop the monsters from coming through.
The team attacked the machine, using all their powers and weapons. The battle was intense, but they were able to destroy the machine and stop the flow of energy to the portals.
As the machine exploded, the portals all over the world began to close. The monsters were sucked back through, and the world was safe once again.
The team returned home as heroes. They had saved the world from the shadow of the gruesome. But they knew that the fight was not over. They would always be ready to defend their home and their loved ones from any threat that may come.