In our time. Modern world will witness the return of one of the most powerful beings in creation: Echidna. The long-lost titan's former companion, Typhon, intends to remind everyone who she is...and she won't be alone. Helped by the numerous and "monstrous" children she fathered in her union with Typhon, she escaped from the Underworld and intends to obtain justice for all they have endured. To fight against this, the secret international organization, nicknamed "Monstrum", intends to destroy all these monsters once and for all... but they will quickly realize that they were not claimed to be "indestructible" for nothing! However, things are never that simple, and are the monsters in this story the ones who are thought of...or are they actually rejected and misunderstood others from a dark time, who just want to find the light ?
