Shazam! and the Shazam Family! Annual #1

In "Captain Marvel Introduces Mary Marvel," Billy Batson stumbles upon a surprising connection when a young girl from a radio quiz show reveals she has half of a mysterious locket—one that matches his own. As the truth unfolds, Billy learns from her former nurse that he and Mary Batson Bromfield are actually twins, a revelation that shakes the foundation of his identity and ties him closer to the legacy of the Shazam Family.

The Sivana Family Strikes at the Marvel Family [Part 1] kicks off with the Sivanas—Dr. Sivana, Georgia Sivana, and Sivana, Jr.—reemerging from obscurity with a dangerous plan. After failing to harness the power of the "Shazam" lightning, the trio turns to an ancient element called Protium, leading them to target the Rock of Eternity in a bid to travel through time and secure it. With Shazam warning the Marvel Family of the threat, Captain Marvel, Mary Marvel, Captain Marvel, Jr., Uncle Marvel, and the wizard himself must prepare for a battle that spans time itself.

In "The Sinking of Atlantis [The Sivana Family Strikes at the Marvel Family Part 2]," Mary Marvel ventures into the past to confront Georgia Sivana, who has already located the source of Protium beneath the ruins of Atlantis with the help of the enigmatic Professor Chal-Patzun. As the city trembles beneath ancient tides, Mary races to secure the power source—only to be captured, leaving her fate and the future of the Marvel Family hanging in the balance.

Captain Marvel races to stop Dr. Sivana from claiming the powerful element Neutrium at Dr. Charles Patterson’s lab, but the villain’s plan takes a deadly turn when he kidnaps Billy Batson and kills the Professor. With time running out and danger lurking beneath the surface, Captain Marvel must face the depths—both literal and personal—to protect the only family he has left.

In "Atlantis Rises Again [The Sivana Family Strikes at the Marvel Family Part 4]," Captain Marvel Junior [Freddy Freeman] uncovers a hidden legacy when he stumbles upon the long-lost lab of Professor Chal-Patzun, only to find that the ancient Protium has transformed into the powerful Electrium—capable of awakening the sunken city of Atlantis. Before he can act, Sivana Jr. ambushes him, knocks him out, and kills Chas Passon, seizing the Electrium and dragging Freddy back to the present with him.

In "The Battle of the Age! [The Sivana Family Strikes at the Marvel Family Part 5]," Dr. Sivana unleashes a terrifying new scheme, gathering his children Georgia and Sivana, Jr. to combine the powerful elements of Protieum, Neutrium, and Electrium. With a chilling precision, he encases the Earth in a protective shell, cutting off the Shazam lightning and leaving Captain Marvel, Mary Marvel, and Captain Marvel, Jr. powerless to transform—forcing them to face the Sivana family’s assault without their greatest strength.