"Infini-T Force" is a 2017 anime series that brings together iconic characters from Tatsunoko Production's classic series, reimagined in a modern context. The narrative centers on Emi Kaido, a high school girl who becomes entangled in a multidimensional conflict after encountering a mysterious device called the Decoder. This device attracts the attention of various forces, including the malevolent villain Galactor, who seeks to harness its power for destructive purposes.

Emi's life takes a dramatic turn when she is rescued by four heroes from different dimensions: Ken the Eagle from "Science Ninja Team Gatchaman," Tekkaman from "Tekkaman: The Space Knight," Polymar from "Hurricane Polymar," and Casshan from "Casshan." Each hero possesses unique abilities and a strong sense of justice, but they are initially unaware of their shared purpose. As the story unfolds, they discover that their worlds are interconnected and that the Decoder holds the key to preventing a catastrophic event that could unravel reality itself.

The heroes must navigate their differences and work together to protect Emi and stop Galactor's plans. Along the way, they confront personal challenges and past traumas, which add depth to their characters. Emi, meanwhile, evolves from a passive bystander to an active participant in the fight, driven by her growing bond with the heroes and her determination to protect her world.

The series blends action, science fiction, and character-driven drama, with a focus on the interplay between the heroes and their evolving relationships. The plot explores themes of heroism, sacrifice, and the consequences of wielding immense power. As the story progresses, the stakes escalate, culminating in a climactic battle that tests the limits of the heroes' abilities and resolve. The narrative concludes with a resolution that ties together the fates of the characters and the worlds they represent, leaving a lasting impact on both the heroes and Emi.