Puss in Boots finds himself in the Thieves Market, a market run and populated by ruthless thieves, and a female cat who seems extremely out of place. Deciding she cannot survive on her own, he decides to follow her and keep her safe. He follows her all the way to what turns out to be the Hidden City of San Lorenzo. The girl, named Dulcinea, chastises Puss for following her, but shows him around the town anyway. While most of the citizens are naturally scared of the first outsider the town has had in years, Dulcinea notes that the spell protecting the town only lets in good people, and uses this as a reason to trust him completely, even showing him the treasure room of San Lorenzo and explaining how the great mage Sino founded the city as a haven for orphans around the world, and gathered treasures and magical items from around the world as well to power a magical barrier that hides the city and keeps bad people out. She also mentions that the spell would be broken if even a single coin is taken out of the treasury.
With a great rumbling, the barrier begins to collapse as Puss reveals he took a "souvenir", out of the treasury. Everyone is stunned as San Lorenzo becomes exposed to the world and thieves attack almost instantly. Puss fends the thieves off, but then immediately begins instructing the villagers to abandon the town as even he cannot fend off all the thieves that will surely swarm the town. Dulcinea insists that they must fight for their town, and as the reason the town is in peril in the first place, Puss must fight for them, too. Puss initially refuses, but eventually decides that he will stay and protect the town. As waves of thieves descend on the town, Puss fends them off as best as he can, but slowly beings to be overwhelmed by their numbers. At his limits, Puss issues an ultimatum:
None of the thieves want to be the one that dies, and they all run off. The town celebrates their hero and Puss swears he will stay and protect the town and its treasure until the day the spell can be restored.
- Badass Boast: Puss assures the thieves that even if they can defeat him, he will at kill at least one of them in the battle.
- Badass Fingersnap: Puss headbutts a thief, walks away and then snaps his fingers just as the thief passes out.
- Call-Back: To the opening narrationPuss: I am a nomad! A free spirit! And I need no one!Dulcinea: But maybe someone needs you!
- The Dulcinea Effect: "I sense that my next adventure begins with a young lady who is out of her element and may soon require my help."
- Exact Words: The spell is broken if even a "single coin" is taken from the vault. Puss took a single coin.
- Furry Reminder: A thief distracts Puss by dangling a piece of string.
- Know When to Fold 'Em: Puss advising everyone evacuate the town.Puss: I'm good. Really good. Really incredibly really good. But even I can't take on dozens of thieves at once. And that is rare that I will admit that.
- Magical Incantation: "Mystic treasure at the center, lift the veil that I may enter".
- Malicious Misnaming: Puss continually refers to a thief named "Raul" as "Pablo".Puss: Hello, Pablo.Raul: It's RAUL!(Raul attacks Puss but Puss defeats him easily)Puss: You are Raul when I say you are Raul!
- Nice Job Breaking It, Hero!: Puss breaks a spell that had kept the town safe for centuries, inviting thieves to come and steal their famous treasure.
- Oh, Crap!: Puss has this reaction when Dulcinea mentions removing any treasure from the treasury will break the spell after he's already done that.
- Only the Pure of Heart: Simply knowing the incantation won't let you into San Lorenzo, one must also be pure of heart. Dulcinea puts a bit too much faith into this, as Puss is more of a Jerk with a Heart of Gold at this point.
- Opening Narration: The only episode to have one, partially because it stops being true after this episode.
- Too Dumb to Live: Well more like Too Good and Naive on Dulcinea's part, as when she arrived to the Thieves' Market for the first time she kept stating out loud how much money she had.
- Worthless Yellow Rocks: Dulcinea shows Puss the Treasure of San Lorenzo, its children. She remarks that the other treasure is just a bunch of old gold and jewels and magical fiddle fuff.
- You Didn't Ask: Inverted. Puss yells at Dulcinea for waiting till after they left to mention the spell would be broken if he took even one piece of the treasure out of the room.