A knight dies and is reincarnated into a baby Behemoth, an S-rank monster that looks just like a cat! A novice D-rank adventurer, Aria, adopts him as her kitty cat!

Aria and Tama visit the armor shop of their familiar blacksmith, Vulcan, to have Tama's armor tailored.

Disappearances plague the neighboring town of Lenard and the demon, Beryl, is behind it all. Aria accepts a quest to save the people in trouble.

Tama takes on the earth dragon, his fated enemy, in order to save Aria from the brink of death. Tama turns into a real behemoth!

Stella continues making passes at Tama with her telepathic skills. Meanwhile, Tama feels uneasy as he watches her fight, driven by her old earth dragon instincts.

The group is caught up in a new forest labyrinth. Tama and Aria are excited to explore an untouched earth said to be full of rare materials and rarer treasure chest.