One day, Inaba Hiroshi's former partner when he was a police dog, Inspector Ogino, shows up at his detective agency.His request was for Inaba to help him catch the Italian mafia boss, Valentino. Inaba and his team infiltrate Valentino's hideout, but what they found there was...

The most valuable document in all of Japan has been stolen and to get it back, unwilling teams will have to play the game. Ogino is sure somebody is stalking his family; he wants Hiroshi to guard them until the perp is caught.

Don has created the ultimate chocolate to trap Hiroshi in one sided love. A new wolf from France is joining Japan's Secret Doberman corps.

Uniformed police officers are being attacked on the street and Ogino has gone undercover.Kei has been kidnapped, but the tables are turned when it's the kidnappers that need saving.

Ogino requires the help of Hiroshi to take down Don’s genius doctor.An Onsen is always neutral territory for rival groups.

Kei is accepted into a unique school, Soumei remembers the pups' youth, and the Don accepts a hitman contract.

Yuuta has been kidnapped in order to lure Ogi into a trap. Soumei tangles with Ogi and succeeds in taking over his body.

Hiroshi has come to save Ogino from Soumei, but its experience vs. new school. Recovering from his fight, Soumei saves Noah from an out of control experiment and sets up a date with alternative motives.

Ogata believes immersion therapy will help Ogi no existent problem with goats. The Don uses his mystical powers to scam tourist and set a masterful trap.

Don Valentino has finally been caught and sent to a unique jail. While waiting for his crew to bust him out he gains a new follower.

The line between former police dog and berserk vigilante is cut when Hiroshi's precious hair collection ends up missing. Corruption attained! A new character is introduced and needs help finding a contractor, good or evil.