In a distant galaxy, there is a planet called Theomandariyon, a world where lions live and have developed an advanced civilization. The lions of Theomandariyon thrive in a society rich in culture, technology, and knowledge, with their golden cities shining brightly under twin suns.

However, this peace is shattered when their neighbors, the Mazurians (creatures who walk on two legs, have four arms, dark green skin, and glowing orange eyes), decide to invade Theomandariyon. The Mazurians, envious of the Theomands' (lions who walk on two legs like humans and are classified into several groups with various races) advancements and wealth, launch a fierce and sudden attack. Their goal is to capture the central core of the planet, which is the source of this great civilization's power.

This invasion plunges Theomandariyon into chaos. Battles rage across the planet, with the lion inhabitants bravely defending themselves on the ground, in the skies, and even in outer space. Both military and civilian Theomands unite to resist the Mazurian attacks, but this war takes a heavy toll on their society.

Amidst this chaos, a lion cub named Kai is born. His mother, a brave and kind lioness, is killed while trying to protect Kai and his father from the Mazurian invaders. With her last breath, she asks Kai's father to keep their son safe from the dangers of war and to take care of him.

Kai's father, determined to fulfill his wife's last wish, embarks on a perilous journey to find a safe haven for his son. He carries Kai through war-torn landscapes, facing numerous threats and challenges along the way. Despite the slim odds, Kai's father remains resolute in keeping his son safe, driven by the promise he made to his beloved wife.

During the journey, Kai's father shares stories of Theomandariyon's rich heritage and the importance of courage, resilience, and hope. Through his father's teachings and the hardships they endure together, young Kai gradually comes to understand the significance of their situation and the legacy to which he belongs.