Six hours to live, and Mu-deok won't talk
Uk collapses; the only cure is to open his gate of energy. Mu-deok is tortured but keeps silent until Master Heo opens it.

Every Alchemy of Souls moment featuring Heo Yeom, in story order. Played by Lee Do-gyeong.
37 moments · 1h 16m
Uk collapses; the only cure is to open his gate of energy. Mu-deok is tortured but keeps silent until Master Heo opens it.
Heo Yeom admits he opened Uk's gate and gave him extra energy to recover; Park Jin insists he take it back to keep Uk far behind.
Heo Yeom demands the wine hidden in Park Jin's room, teases him about never getting over Do-hwa, and finds the bottle already empty.
Heo Yeom sets Mu-deok to sweeping and fertilizing; she silently vows revenge, and he grabs her ear, sure he has seen it before.
Called in to have his energy taken back, Uk apologizes for the goats in the herb garden and presents rare wine, then more bottles.
Over wine, Heo Yeom says Do-hwa was like a daughter to him and tells Uk to remember her kindness and ignore the gossip.
Master Heo's plea backfires: Jin Mu wants Uk's sword arm cut off, then proposes an official duel with the Crown Prince.
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.
Two old friends reminisce about Uk as a newborn, then squabble over a raisin tree pill and whether one of them is going gray.
Drunk Master Heo reveals he brought Do-hwa to Sejukwon to match her with Park Jin, who never said the words; his shrug at lost love sends Maid Kim off.
Master Heo signs Uk up as a marriage candidate, then learns he wanted Naksu as a master and would use sorcery to save a life; he demands his energy back.
Master Heo greets his granddaughter, finds the drunk patient is Uk, praises him as a genius, and leaves Yun-ok to tend the man she met before.
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.
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.
Asked why Master Lee helps him, Uk 'reveals' the family matter: Lee is winning over Maid Kim, and Uk offers Park Jin the first chance.
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.
Before leaving for the palace, Master Lee reminisces about the young Heo Yeom and scolds him over the gift's delivery time.
After a 100-day meditation, Master Lee steps out of his body to test Hwansu, finds villagers cremating it, and berates young Yeom from a boy's body.
Summoned by an absent Master Lee, Uk receives Naksu's sword along with a scolding about leading Yun-ok on and a warning about how strict Lee can be.
Outside, the elders find an invisible barrier around Jeongjingak with the Crown Prince and their children trapped, and start blaming each other.
Yul still hurts after healing; Mu-deok learns So-i gave him her blood and that a parasite is in his body, and plans medicine.
Asked to prove the marriage, Uk claims Bu-yeon is with child, stunning the Assembly and dodging the physician's check.
Meeting Master Heo and Dang-gu, Bu-yeon owns up to the fake pregnancy, sizes up their energy and sniffs out eavesdroppers.
Discussing Uk's push for her to wed, Maid Kim and her suitor admit their longing in a tender embrace.
Over noodles from Mu-deok's recipe, Uk's physician friend accuses him of wanting to die and tells him to truly mourn her.
Uk hides at Jeongjingak; his physician friend teases him that Bu-yeon toppled the tower, and Maid Kim invites herself to stay.
A patient demands to know what is inside his body; then Master Lee reappears after three years, saying he treated Jin Bu-yeon.
Teasing about Master Lee's old feelings for Maid Kim makes Park Jin brood, and he punishes the gossips with a pot of spicy beef soup.
Master Heo asks why Yul has been avoiding him and offers to examine him; Yul promises to return and wishes him good health.
Heo Yeom explains the parasite sits in Yul's core of energy and only leaves when he dies; his friends refuse to accept it.
Heo Yeom lays out a water wick, Yul's energy and the fire bird's power, and explains why Cho-yeon's blood is the key.
A warning about pregnancy sends Dang-gu into a panic; Bu-yeon volunteers and flatly insists there is no chance for her and Uk.
The plan needs a fortune in gold; Uk reveals he dumped his soul-shifter bounties at Jeongjingak and never spent them.
Heo Yeom draws Yul's last energy into the wick and places it in Bu-yeon's mouth; she must not open it before time runs out.
Uk and Go Won use the gold's energy at the fire bird's barrier to pull the parasite from Bu-yeon, then race back to revive Yul.
Master Heo plots to make his granddaughter queen; gossip says the new King practices chastity, and the King recalls a turtle son.