Puss in Boots: The Three Diablos is a short film that will be released alongside the DVD release of Puss in Boots.
Puss in Boots is on a mission to recover a princess' stolen ruby from the notorious French thief, Whisperer. He is, albeit reluctantly, by three little kittens: The Three Diablos; he must tame them before they endanger the whole mission.
After his adventure in "Puss In Boots" movie, Puss is riding his horse through the desert and is then captured by knights. He is then taken to Princes Alessandra Belagamba, who's Heart of fire ruby is missing, the crown jewel of her kingdom, wants to hire Puss based on his reputation. She reveals that a thief called "The Whisperer" stole the heart and that they captured three of his henchmen. the henchmen turn out to be three kittens called the Three Diablos, who kindly agree to help Puss.
When Puss takes the kittens to the dessert the kittens quickly turn on him, then use their chains to tie him up and take his clothes and the keys to their shackles, then the grey one and the orange one yank on his whiskers, then the blonde one giggles and uses his boots to hit his head, then they use his belt to whip his backside, then the orange Diablo punches his head while the grey one jumps on him. Meanwhile the blonde one starts digging a hole, then they use the feather on his hat to tickle his nose, then the blond one finishes the hole, then the three Diablos push him in it and bury him alive. Puss later escapes and recaptures the kittens using his wide eyes, against theirs. Later he talks about sending them back to jail but then learns that they have no mother and are orphans like him. He then tells them how he also knows it's tough not knowing who to trust and being led to the wrong path.
An example is how Humpty betrayed Puss just as the Whisperer has done to them. Puss then decides to point them in the right direction and trains the Diablos how to fight and plays with them becoming friends. He also gives them names, Perla, for being one of a kind, another Gonzalo, for his scrappy temper, and the other Sir Timotao Montenegro III, because "sometimes a title is all you need". The next day the kittens show him to the Whisperer secret hideout, and he is immediately confronted by the Whisperer, who by his name has a low voice volume, learning how the Diablos betrayed him the whisperer threatens to hurt them but Puss fights him and lets the kittens escape.
They however return to help Puss with what they learned from him and The Whisperer falls over to his death. Puss then returns the heart to the Princess and is rewarded gold, and he gives the Princes the kittens as her new personnel bodyguards. They then say their goodbyes and Puss claims "He will never forget them, just as he is sure they will never forget the name of Puss in-" then the guards then slam the doors before he can finish his goodbye.