Alus, born to Luca and Bianca during their quest to rescue Luca's mother and fulfill his father's legacy, encountered peril almost immediately after birth. The antagonist Ladja attacked the family, petrifying both Luca and Bianca and leaving Alus orphaned under the care of the family retainer Sancho.

Separated from his petrified parents for eight years, Alus eventually located the Stolos staff, a magical artifact that reverses petrification, and used it to restore his father Luca to life. Shortly after reviving Luca, he discovered the Zenithian Sword—a legendary weapon his father could not wield—and successfully harnessed its power, fulfilling the prophecy of the Legendary Hero that his grandfather Pankraz had mistakenly assigned to Luca.

Alus joined Luca's party for the final assault on Ladja's fortress. During the climactic battle, he aided his father in defeating Ladja by delivering a decisive strike, avenging Pankraz's death. After Ladja's defeat, Ladja absorbed residual energy from Alus's grandmother Mada to open a portal to the Demon World. Alus intervened immediately, hurling the Zenithian Sword to seal the portal and prevent Grandmaster Nimzo's emergence, safeguarding the world from catastrophe.

In the aftermath, Alus traveled to Gotha with his reunited family, symbolizing the restoration of peace and familial bonds.