Night fight with the stranger who sensed a soul shifter
A stranger senses a great soul inside sleeping Mu-deok; Uk confronts him and their fight breaks out as Uk tells her to run.

Every Alchemy of Souls moment featuring Master Lee Cheol, in story order. Played by Im Cheol-soo.
64 moments · 2h 28m · by Favseen
Moments 1–30 of 64
A stranger senses a great soul inside sleeping Mu-deok; Uk confronts him and their fight breaks out as Uk tells her to run.
The stranger apologizes, introduces himself as Master Lee and suggests Mu-deok sleepwalks; she and Uk bicker over the bed and deny being married.
Mu-deok and Uk watch Master Lee light a fire and dry his clothes with energy, and Uk realizes how badly last night could have gone.
Uk learns he drank a pot of libido-killing chaste tea; then Master Lee says training under him means drinking more of it.
Uk is happily cooking and fishing with Master Lee; Mu-deok attacks the scene with a knife and calls him a coward.
Master Lee recalls his one pupil who married and left, then offers Uk an ordinary life by cutting off his energy.
Looking for Mu-deok, Uk says she needs to be embraced; at a corpse in town, Master Lee explains soul shifters and pitches Hwansu.
Debating the Jin marriage, an elder admits he once left his master for love; then an intruder breaks the barrier and Heo Yeom greets his master.
Master Lee suspects Cheonbugwan, reins in Heo Yeom, teases grown-up Park Jin, and reveals he took the dog Gwigu to hunt soul shifters.
Master Lee realizes Mu-deok is Uk's real master and warns her Tansu could kill him; Uk's sword nearly hits her.
Master Lee warns Uk's arm could rot; Mu-deok calls him lucky and fine, and Uk sees through his cruel master's kind lies.
Over thin pheasant soup, Master Lee reports Cho-yeon is marrying the Gwanju's son; Uk is stunned and teased about the chaste tea.
A Songrim elder tells a boy how a hailstone that never melted produced the Soul Ejector, plunged Daeho into war, and why Jinyowon's relics are feared.
Elders demand who taught Uk Tansu; he insists he trained alone, and Master Lee steps in to vouch for him and his maid.
Picking petals at Chwiseonru, Maid Kim slips and is caught by Master Lee, who came only for food; untangling them leaves him rattled.
Master Lee says it would take a year of training, then lets slip a secret: the poem was written for a woman who could not see.
Heo Yeom fusses over Master Lee's thin clothes, then Maid Kim arrives and gives Master Lee a coat as a thank-you gift, not a bribe.
Reasoning that every love letter starts with a name, Uk learns who the poem was for, and the invisible text appears to him.
Discussing Uk, Master Lee recalls that Jang Gang performed the alchemy of souls twenty years ago and a child was born under the King's Star.
Master Lee visits Maid Kim with flowers; Park Jin shows up worried and empty-handed, and she tells him she wants flowers, not weeds.
Jin Mu's courting of Jinyowon is linked to the ice stone, whose power is being used to make Soul Ejectors that grant new bodies.
Two masters piece together that Naksu, Cho Chung's daughter, unknowingly disposed of Jin Mu's discarded soul-shifter bodies.
Maid Kim recalls Jang Gang's friend Cho Chung and his lost daughter, believes the girl is dead, and wants to drive off her lingering spirit.
Master Lee finds Uk home on 'probation'; Uk refuses to fish so he can train, until Mu-deok hears about the Golden Fish and volunteers him.
At the lake Master Lee fishes with his own energy and pulls up a Golden Fish; Mu-deok reveals the trip is really a lesson in Chisu.
Uk guesses Master Lee's feelings for Maid Kim and admits he likes Mu-deok; Lee reveals he knows Naksu was Yul's first love.
Master Lee explains that some are born able to grasp energy and others fear them, as Uk catches the Golden Fish and Mu-deok tells him he has reached Chisu.
Master Lee says his chastity is over, Park Jin insists she still loves Jang Gang, and he is told he is the slow-witted one.
Over quince tea, Maid Kim's dried wildflowers come back to life, and she wonders whether the man she loves simply does not like her.
Before leaving for the palace, Master Lee reminisces about the young Heo Yeom and scolds him over the gift's delivery time.