In The Fallen Ones, the archaeologist named Matt Fletcher discovers the mummified remains of the offspring of a Fallen Angel and a human woman while excavating in the Middle East. As he and his team transport the giant mummy back to the United States, they begin to experience a series of strange and terrifying events.
As it turns out, the Fallen Angel's offspring is not dead, but only dormant. Awakening from its centuries-long slumber, the giant creature begins to wreak havoc on the city, causing destruction and chaos wherever it goes.
Fletcher realizes that he has unleashed a powerful and malevolent force upon the world and teams up with a group of scientists and experts to try and stop the creature before it can do any more damage. With the help of an ancient text, they learn that the only way to defeat the giant is to retrieve a powerful artifact, which is in the hands of a wealthy and eccentric collector.
From there, the group embarks on a dangerous journey to retrieve the artifact, battling the giant and its minions every step of the way. As the creature grows more powerful and more destructive, Fletcher and his team must race against the clock to save the city and prevent the fallen ones from destroying humanity as we know it.