In a world of beast taming, a young man named Wu Fan summons the universally recognized weakest ornamental pet, the Glowfly Butterfly, during his awakening ceremony. He instantly becomes the laughingstock of the entire school and is publicly mocked and humiliated by his sworn rival. Just as everyone declares his future ruined, Lu Yuan unexpectedly awakens the Beast Taming Compendium talent and unlocks a villain-exclusive evolution path for butterflies. The supposedly useless butterfly in everyone else's eyes gradually unlocks forbidden skills in his hands, growing against all odds into a legendary ferocious beast. Together with his beast companion, he humiliates those who looked down on him, overcomes trial after trial, and breaks prejudice through sheer ability, steadily advancing along the path of beast taming and writing his own passionate legend of growth.