The Four Seasons of Daeho arrive
Mu-deok learns of the four famed young heirs of the Jin, Park, Seo and Jang families, and quietly swears they will all die.

Every Alchemy of Souls moment featuring Jin Cho-yeon, in story order. Played by ARIN.
67 moments · 2h 22m · by Favseen
Moments 1–30 of 67
Mu-deok learns of the four famed young heirs of the Jin, Park, Seo and Jang families, and quietly swears they will all die.
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.
Gwigu turns up, Uk tells Mu-deok to run, and Cho-yeon finds her family's heirloom pottery smashed in his hands.
Cho-yeon hopes Uk can join the family now; her mother refuses and tells her she must take her late sister's place guarding Jinyowon.
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.
Cho-yeon brags that Uk beat the Crown Prince, but the leader hears Uk threatened the Prince and orders him locked up as dangerous.
Cho-yeon's mother offers to block the King's order with the Jin family plaque, if Uk marries Cho-yeon; Cho-yeon says she still wants him.
Cho-yeon asks for her missing sister Bu-yeon's room, is refused, and is promised the yin-and-yang jade for wedding rings.
Cho-yeon nearly wastes Jinyowon's love perfume on her letter to Uk, and Dang-gu reluctantly lends his hand for ring sizing.
At Chwiseonru shopping for wedding rings, Cho-yeon's jade breaks and the staff gossip that Uk carried drunk Mu-deok on his back.
Cho-yeon orders her future maid to carry an already broken stone; Mu-deok refuses, then spots a dangerous man and grabs it after all.
The Crown Prince is told the maid broke the yin-and-yang jade meant for the wedding rings and fled, then Yul turns up looking for her too.
Uk takes responsibility for his maid before Jinyowon's leader, wins permission to search for her himself, and asks to enter the relic vault.
Warned the vault's relics can trap anyone forever, Yul and the Crown Prince insist on going in with Uk, and are given one hour.
Locked up, Mu-deok rattles Cho-yeon with a superstition about broken jade, then accuses her of framing the maid; Cho-yeon threatens to sell her.
The broken mirrors lead them to the Mirror of Longing. Its leader refuses even a royal order to move it and vows to seal the door on Uk.
Cho-yeon claims the broken jade, the damaged mirror and the sealed door as her own doing, and the family agrees to keep it quiet.
When gossip says Cho-yeon is marrying, Dang-gu lets the girls believe it is him, offering to take the blame for a breakup later.
Cho-yeon begs her mother to stop it, Uk defends as coached, an order goes out to smash the water crocks, and Uk ends the match with Tansu.
Master Jin returns from a southern island with an orphan of the right age, but Jinyowon's door gives its verdict and Ho-gyeong sends her away.
An engaged pair plan a public fight to end their engagement, but she wants to see a magic show first, so they delay the breakup.
Cho-yeon thanks Dang-gu for playing her fiance; he says his feelings were sincere and he was ready to give up being Songrim's heir.
Jin Mu tells Ho-gyeong a drowned girl may be Bu-yeon; nearby So-i studies her future family and decides to look more pitiful.
Jin Ho-gyeong rages over the room kept for her lost daughter, while Cho-yeon's father gives her an early birthday gift and braids her hair.
At the inn Mu-deok runs into Jin Cho-yeon, who begs her to keep quiet; Mu-deok needles her about lying, then they spot Songrim's leader.
Framed for murder, Mu-deok begs Cho-yeon to vouch for her; when Cho-yeon refuses, Mu-deok threatens to ask her mother instead.
Lady Jin plans a vase for her blind daughter's room; she finds Mu-deok inside and furiously throws her out.
Told the room belonged to a daughter thought drowned, Mu-deok learns she was blind and wonders if that is why she felt something.