"Gushing Over Magical Girls" centers on a group of young girls who discover they possess magical abilities and are tasked with protecting their world from dark forces. The protagonist, a seemingly ordinary middle school student, stumbles upon a mystical artifact that grants her magical powers. Alongside her friends, she forms a team of magical girls, each with unique abilities tied to elemental forces or specific magical traits. Their mission is to combat an emerging threat posed by a shadowy organization seeking to harness dark energy to destabilize the world.

The narrative unfolds as the girls balance their everyday lives with their newfound responsibilities as magical warriors. School, friendships, and personal struggles are interwoven with their battles against increasingly powerful adversaries. The antagonist group, led by a mysterious figure with a tragic past, aims to exploit the magical energy within the girls, creating tension and raising the stakes as the series progresses. The magical girls must learn to work together, mastering their powers and uncovering the true nature of their abilities, which are tied to an ancient prophecy.

Key characters include the optimistic and determined protagonist, who serves as the emotional core of the group; her best friend, a pragmatic and resourceful strategist; a shy but immensely powerful girl with a hidden past; and a fiery, impulsive member who often clashes with the others but proves vital in critical moments. The antagonist leader, driven by a desire to rewrite history, provides a complex foil to the protagonists, with motivations rooted in loss and a misguided sense of justice.

The plot explores themes of friendship, sacrifice, and the burden of responsibility, as the girls face moral dilemmas and personal growth. The series balances action-packed magical battles with quieter, character-driven moments, creating a dynamic narrative that appeals to fans of both magical girl and action genres. As the story progresses, secrets about the origins of their powers and the true nature of the prophecy are revealed, leading to a climactic confrontation that tests the bonds of the team and their resolve to protect their world.