"Lego Chima ~Animal Senshi-tachi no Densetsu~" is an anime adaptation of the Lego Chima franchise, set in the fantastical world of Chima, where anthropomorphic animal tribes coexist in a delicate balance. The narrative centers on the conflict over Chi, a powerful energy source that sustains life and grants extraordinary abilities. The story begins with the Lion Tribe, led by Laval, the young and courageous prince, and his best friend Cragger, a member of the Crocodile Tribe. Their friendship is tested when Cragger, influenced by his tribe's growing greed for Chi, betrays Laval and plunges Chima into chaos.

The Crocodile Tribe, under Cragger's leadership, begins to hoard Chi, disrupting the natural order and sparking a war among the tribes. Laval, determined to restore peace, embarks on a journey to unite the fractured tribes, including the Eagles, Wolves, Gorillas, and Ravens, against the Crocodiles. Along the way, Laval forms alliances with key figures such as Eris, an Eagle warrior, and Worriz, a Wolf leader, who initially distrust one another but gradually learn to cooperate for the greater good.

As the conflict escalates, the tribes uncover ancient secrets about the origins of Chi and the true purpose of their world. The discovery of the Legend Beasts, powerful guardians tied to each tribe, becomes pivotal in the battle for Chima's future. Laval and his allies must harness the power of these Legend Beasts to confront Cragger and the Crocodile Tribe, who grow increasingly desperate and reckless in their pursuit of dominance.

The series explores themes of friendship, betrayal, and the consequences of greed, as well as the importance of unity and understanding in overcoming adversity. The characters' personal growth and evolving relationships drive the narrative, with Laval emerging as a selfless leader who prioritizes peace over power. The story culminates in a climactic battle that determines the fate of Chima and its tribes, ultimately emphasizing the value of balance and cooperation in a divided world.