Follow Blitzo (the 'o' is silent) as he attempts to run a startup killing company in a very competitive market, along with his weapons specialist Moxxie, his powerhouse Millie, and his receptionist hellhound Loona. With the help of an ancient book obtained by one of the princes of Hell, they manage to make their work possible and together they attempt to survive each other while trying to keep their business afloat.

After her husband's mistress survives a violent outburst, a deceased teacher hires the I.M.P to finish the job, only to encounter a far more bizarre threat.

In an attempt to get Blitzø's attention, Stolas unnecessarily hires the I.M.P to work as bodyguards for him and his daughter, Octavia, while they visit Loo Loo Land, an amusement park in the Greed Ring.

Blitzø discovers that his reserved, sole parking spot has been stolen by his ex-girlfriend, succubus and famous pop star Verosika Mayday. He and the rest of the I.M.P attempt to get it back by challenging Verosika to a "demon duel."

An eccentric inventor killed by an experiment gone wrong hires the I.M.P to assassinate his now elderly business partner, only to find that he's being talked out of suicide by a rival organization.

Stolas invites the I.M.P to attend the Harvest Moon Festival, an annual event taking place in the Wrath Ring that is overseen by him. However, unbeknownst to our protagonists, an insidious plot will be transpiring there.

While on Earth, Blitzø and Moxxie are captured by demon-hunting government agents. To escape, they must fight, and come to terms with their inner fears in the process.

Loona goes to a hellhound party in the Gluttony Ring, but after things don't go the way she planned, she asks Blitzø to join.

Millie helps Blitz deal with his NOT-breakup and things happen. WARNING: Happy Halloween.