Dang-gu bursts in with tavern gossip
Dang-gu rushes to his uncle with rumors about Naksu, gets scolded for hanging around bars, and reveals Uk has been sent to train with a monk.

Every Alchemy of Souls moment featuring Park Dang-gu, in story order. Played by Yoo In-soo.
80 moments · 2h 45m · by Favseen
Moments 1–30 of 80
Dang-gu rushes to his uncle with rumors about Naksu, gets scolded for hanging around bars, and reveals Uk has been sent to train with a monk.
Mu-deok learns of the four famed young heirs of the Jin, Park, Seo and Jang families, and quietly swears they will all die.
Dang-gu tracks down Uk, who wants his friend to crack crab shells with a spell, and shares a rumor that Naksu may still be alive.
Uk asks about Naksu's sword technique; Dang-gu explains Tansu, and Uk realizes the girl went for his vital point in one move.
Uk shows Dang-gu the bird whistle found on an unexpected person and insists he remembers exactly who he gave it to.
Masked intruders break into Songrim, the Training Center burns, Jeongjingak is emptied, and Mu-deok realizes her old master sent them.
Yul's blade finds the pair; Uk passes Mu-deok off as his maid, she grips the blade to protect him, and Uk scolds her glare.
Naksu's body is gone and a spy is suspected; Uk teases Mu-deok while the others discuss how soul shifters pick similar bodies.
Everyone in Songrim is gathered and locked in while Jin Cho-yeon brings Gwigu, the Jin family's ghost dog that sniffs out sorcery.
The Four Seasons are together again for the first time since Uk and Cho-yeon called off their wedding, and it shows.
His friends explain to Mu-deok that Uk's gate of energy is opened just enough to keep him alive, and no one in Daeho may open it.
Uk collapses; the only cure is to open his gate of energy. Mu-deok is tortured but keeps silent until Master Heo opens it.
Uk tells the Songrim leader he poisoned himself and his maid only obeyed, then refuses treatment unless Mu-deok is treated too.
Over stolen wine, Dang-gu and Yul find Mu-deok suspicious for faking blindness, then Yul abandons Dang-gu as his uncle arrives.
Dang-gu catches them spying; Mu-deok lists every complaint about her fickle young master, and Uk pins a crush on Yul to cover it.
Taking Dang-gu's dating tips, Mu-deok shadows Yul, nimbly catching books and claiming she learned to move at the brothel.
A plea to let Uk return is shut down; over a soul shifter's petrified victim, the Songrim leader explains the alchemy of souls needs Hwansu mastery.
On the way to see Uk, the friends tease each other over their reasons for coming, from fishing plans to medicine to nitpicking.
Uk unsheathes his father's sword but cannot control his arm; a binding bracelet stops him, and the Prince dares the four heirs to fight him together.
Mu-deok offers to drink chamber-pot water as an apology, Uk insists he should, and the friends join in until the Crown Prince gives up.
Royal guards come for Uk after the duel challenge; warned he could lose his arm or life, he slips away to Sari Village with Mu-deok.
Dang-gu teases Yul that Mu-deok loves him; the innkeeper guesses Uk fled to Danhyanggok, stirring Yul's memory of a pet bird there.
A body is smuggled out through a tunnel; the wagon is stopped, a fight breaks out, and Songrim's Spirit Plaque turns up inside.
Drunk Mu-deok drifts into a memory of an injured child and a bird call, then Yul and Dang-gu track her and Uk down in Danhyanggok.
Yul admits he snuck into Danhyanggok for the birds he loved, then the friends happily drink Master Lee's chaste tea.
Uk and Dang-gu watch Mu-deok scold Yul over green onions and soup; he takes it like a diligent pupil and the meal turns out tasty.
Yul finds the tall tree from his past; offered a climb with Dang-gu, Mu-deok refuses to share such a special tree with just anyone.
Yul quietly asks Mu-deok whether it was cold here in winter; her answer comforts him while Uk and Dang-gu argue over whom she likes.
Dang-gu and Yul report the assembly's talk of cutting Uk's energy and urge him to lie low; Uk says he will do the opposite.
Cho-yeon nearly wastes Jinyowon's love perfume on her letter to Uk, and Dang-gu reluctantly lends his hand for ring sizing.