The Weismann bloodline had been in power since the establishment of the kingdom of Rhea. Before the king, those of all kinds lived in peace and harmony with one another. However, Dedrick had other ideologies. He felt that the titans were not equal to those of human origin. He felt that they were far superior.
When Dedrick came into power he wanted all humans to be eradicated from his land. He began capturing and killing thousands upon thousands of humans, because he saw them as worthless creatures. Dedrick married, a member of the Shinto family Lucina. The two of them bore two children. The oldest was their daughter Serena who inherited the powers of the Shinto line, while the youngest son Emil inherited the gifts of the Weismann line.
The two children grew up knowing nothing about the outside world beyond their castle walls. However, upon their sixteenth birthday they were introduced to the turmoil that their father was putting on the people.
Serena became in charge of the scouting division, working with the Aberdeen family as well as being guarded by those of the Nacht family. She traveled to the neighbouring countries observing them for her father. It was his hopes of expanding the kingdom and overthrowing the other lands. However, Serena wanted none of that. She didn't want to see the deaths of innocent people anymore as she watched her father succumb to the curse.
While visiting a neighbouring nation she met a man by the name of Ulric LeBlanc. He travelled with her back to Rhea and saw the land the way it was. Ulric was an alchemist and was amazed at the different beings that were present. However, he too was to fall victim to Dedricks wrath. Before the Aberdeen and Nacht families could report, Serena had killed most of them.
She didn't return home after a while and remained with Ulric. She helped him in his research and eventually started a following. Using what powers she had obtained from the Weismann line, she was able to manipulate the minds of those around her and bring them into the following. She was starting a resistance with Ulric to bring her father down. With her powers she brought in members of different bloodlines to fall victim to Ulric's experiments.
Through Ulric's experiments, he was able to create an elixir. When the elixir was ingested, those of human origin would be granted the power of a pure blooded titan. Ulric had isolated different components of each titan which enabled the humans to have one of the titan's abilities.
With the powers, Ulric LeBlanc and Serena Weismann led the uprising to overthrow Dedrick and his tyranny. With an army, the war begun. During the battle those who had drank the elixir had undergone strange behaviours. They almost began to become mindless creatures rather than intelligent human beings. The side effects of the elixir had the side of effect causing the subject to eventually lose control over their own humanity during the battle. However, because of this, they were given the upper hand along with their overpowering numbers. Dedrick and the rest of his family escaped the castle before it was overrun by Ulric and his fighters.
It was believed to be a form of the curse that was placed upon the titans long ago. Those who were once humans were losing the very things that were making them humans. They were destroying everything. However, it was at this time that the king himself had fallen victim to the curse, along with those in his court. Blood was to be shed as monsters took the plains of Rhea once more.