By The Sword

Verrocchio's art workshop is transformed into an inventor's room for Leo who is hard at work on his tank prototype. Verrocchio constantly gets in his way trying to sketch and paint in the middle of what has essentially become a munitions factory/laboratory. Leo hurts his feelings when he yells at him for being underfoot. The balance of power has shifted as Leo is now the craftsman whose work is valued.

Close quarters

Excitement ensues when famed swordsman Silvio Pirelli, champion fencer of all of Europe, comes to Florence and is hired to teach Lorenzo how to fence. He turns out to be a total jerk, humiliating a small boy in front of a large crowd. Tom, who is dressed in girl's clothes, confronts the arrogant fencer and challenges him to fight her. 

Tom challenges the braggadocious Silvio to a sword fight

He makes a few choice sexist comments and announces that he doesn't fight girls. Tom stalks away in anger. She returns in boy's clothes and challenges Silvio to a sword fight as he insulted her "sister" Lisa. Not wanting to appear a coward, Silvio accepts her challenge. 

Bow out gracefully? Nah!

 Leo reminds Tom she doesn't know anything about fencing so she decides to tell Lorenzo to cancel the match, but she discovers that he has already cancelled it without telling her. Enraged, Tom is determined to go through with it and tells Silvio that she will definitely fight. She convinces Lorenzo to teach her how to fence.

"Ugh, I need new friends!"

Meanwhile, Angelica sneaks out of the Medici palace to meet Mac at his house and tell him that they can never be together. While he is trying to convince her not to marry Lorenzo, Lorenzo and Tom show up to practice fencing and Angelica hides. 

Tom accidentally runs into the curtain Angelica is concealed behind and her wig falls off.  Lorenzo and Angelica get into a massive row as he realizes she has been seeing Mac behind his back and she accuses him of having a girl (Tom) on the side. There are now only around two people in Florence who don't know that Tom is a girl.

Busted!

 Angelica realizes that Tom is the girl that Mac told her he liked. She is very dismissive of Tom's cross-dressing and much to her rage, tries to lecture her on a woman's role in Florence society. This serves to make Tom only more determined to fight Silvio. 

"Oh yes, I do recall that YOU STOLE MY LOOK!"

Lorenzo learns to his alarm that Silvio is planning on making an example of Tom and has no qualms about wounding her. Lorenzo tries to enlist Leo's help, but he is too caught up in his inventing. As agreed, Tom meets Silvio in the morning for their match. He offers Tom the chance to use real swords without blunted tips and fight until yielding or death. Tom accepts his challenge to the horror of everyone but the unsporting Silvio. 

"Smirk, smirk, little peasant boy. Smirk, smirk."

 Knowing only Leo can change her mind, Mac runs to fetch him. Leo grabs his newest invention, some flash bombs, and runs to save Tom. All of Lorenzo's training goes out the window and Tom uses her rapier like a broadsword against Silvio. He easily avoids her hacking thrusts and dances around her, smacking her with the flat of his blade and making a fool of her. While he is showing off, Tom is able to get a cut in. This enrages the vain Silvio as she has ruined his expensive shirt. Silvio launches a concerted attack and disarms Tom just as Leo arrives. As he is about to stab her in the heart Leo throws a flash bomb into the middle of the fight, stunning Silvio. Silvio accuses Tom of cheating, but she has gotten her second wind and relieves him of his suspenders, using his own tricks against him. 

Imagine his shock if Tom pulled off her wig

 Thoroughly pantsed, the humiliated Silvio flees and Tom is the hero of Florence. Leo is roundly scolded for abandoning his work by Verrocchio which restores the balance of power around the workshop.

The Hero of Florence

 The only downside it that Lorenzo now has no fencing tutor, but really he should be fine as he trained the new default champion fencer of Europe. 

"Back to Placidi! Sigh."

The entire episode seems to be based around that well-known quote by Mark Twain: 

"The best swordsman in the world doesn't need to fear the second best swordsman in the world; no, the person for him to be afraid of is some ignorant antagonist who has never had a sword in his hand before; he doesn't do the thing he ought to do, and so the expert isn't prepared for him."

The person to be afraid of