The late afternoon sun glinted off the mirrored windows of the HFH headquarters, situated in the heart of modern Philadelhx on planet Earth-xus. In the building's training room, Libra focused, his fists encased in swirling fire and freezing ice.

Suddenly, the training room exploded with a violent force, catapulting Libra against a wall. Emerging from the smoke and debris, a figure remarkably similar to Libra stepped forward. Wearing a mask and brandishing a sword, this was Aries.

Outside HFH headquarters, Muffin and Axel watched in horror as the building erupted into flames. Leaping into action, Muffin reached out with his telepathic synth, while Axel’s purple and yellow dancing flames surrounded them.

Despite their valiant efforts, Aries, unfazed, continued his assault, dispatching both Muffin and Axel with ease. In the ensuing chaos, the majority of the building collapsed, and Aries disappeared into the dust-filled air.

Libra, battered and bruised, managed to pull himself from the wreckage. Silent rage simmered within him as he surveyed the destruction. With a swift, vengeful transformation, he hurled himself into the smoky void in search of Aries.

The battle between the two was fierce and relentless. Their powers of fire and ice met, creating a spectacle of contrasting colors. Libra, driven by his determination, slowly gained the upper hand.

A punch from Libra sent Aries into a wall. As he crashed, his mask fell off, revealing a face identical to Libra's. He was indeed a clone, designed to mimic Libra's every aspect.

Before Libra could interrogate Aries, he vanished into thin air, leaving more questions than answers. The destructive exhibition, however, had taken a toll on Libra, who collapsed onto the ground, gasping for breath.

Muffin and Axel rushed to his side, their powers flickering as they struggled to stay conscious. They comforted the broken hero, assuring him that they would uncover the truth and bring the perpetrator to justice.

Finally, Mara, who had been unconscious in the explosion, woke up. With her magical abilities, she restored the building, bringing back a semblance of normalcy. The team had survived its hardest test yet, but the real battle was just beginning.

In the quiet dusk of the day, they stood amidst the restored building, reminded of their dedication to protect their city. They agreed to confront what lay ahead together, as a team. The battle of fire and ice had just commenced.