For years, Twenty-Fifth Bam lived a solitary life until he met Rachel. With her decision to climb the Tower firmly set, Rachel prepares to leave Bam behind to chase her ambition. Following Rachel through a radiant barrier, Bam begins his journey to ascend the Tower, driven by his wish to reunite with her.
The Tower, however, is a treacherous realm filled with ancient mysteries, formidable creatures, and hostile individuals. Each floor is overseen by an Administrator who imposes rigorous trials on those brave enough to face them, pushing their limits to the extreme.
When confronting Headon, the Administrator of the first floor, Bam learns he is classified as an "Irregular"—someone who entered the Tower without being chosen by it, an exceptionally rare occurrence. Even with this revelation, Bam's path forward remains unwavering. Whether it be riches, strength, fame, or reunion with Rachel, the summit of the Tower promises to fulfill every desire.