The story so far
One paragraph per episode, up to your “watched up to” point. Each links to the full episode page.
Shriek Week, episode 1: The Club Fair
At Bram University, a school where monsters live together, four seniors prepared for Shriek Week: the werewolf Terry Talbo, the ghost Megan Mirror, the mummy Tuti and the vampire Seven. Over a first night at the Skeleton Caves bar they discussed dating, and the next morning the campus radio announced day one and Vice Dean Hans Dulla opened orientation, where Van Helsing invited everyone to a Saturday party. Megan gave Mothman a fermented blueberry soda that left him tripping, and Seven bribed the cafeteria worker for human blood, bit a student named Ted with his agreement, told him he was free and watched him run off. Tuti asked the minotaur Asterith to pose for her nude photography, Terry talked to the werewolf Fen in the science lab, where a gray figure took the head of a small Frankenstein figure, and Seven used brujería to calm Ted at the recruitment tables. Seven met her ex Drusille and Drusille's partner Yui, Van Helsing's cousin Cleets was charmed by Tuti, and back at the bar Seven admitted to Terry and Megan that she had bitten Ted. Mothman arrived with what he knew about Cleets and Asterith, and a fiendish laugh sounded outside, where Ted was seen looking at something before a bright flash. 00:02:57–01:49:02
Shriek Week, episode 2: Quandary on the Quad
The morning radio announced day two with an Ultimate Frisbee tournament and a clothes swap, and Mothman's flyers combined into a message that Seven read as "Something is wrong with the Vice Dean?" 00:08:32. Mothman reported that the Vice Dean had a plant-like head, while Frank's headless body walked the Quad, and Terry, Megan and Seven went to the Dean's office as Tuti stayed on the Quad with Cleets and Yui. In the office a talking venomous plant claimed to be the Vice Dean, and later the group spiked coffee with Megan's ferments, the plant drank it and shrivelled to ash, and a large hand pulled the Vice Dean's body through smoke. Megan threw sourdough starter at a large tree on the Quad, and seventeen eyes opened on it. After the Frisbee game, which Terry's team lost 2-1, Teddy at the dining hall counter said he was the 14th, and Tuti choked him in the kitchen until his body liquefied and left behind clothes and a note on how to be a human. In the basement they found pods holding naked Teddys, a golden eye got into Terry's right pupil, and at the clothes swap the tree turned dark red, sank into the ground leaving a chasm, and dragged Van Helsing down after he shot a crossbow into it. 00:02:39–02:07:55
Shriek Week, episode 3: Parents' Weekend
The campus was quieter on Wednesday, and the four searched the empty senior dorm hall, where a thin troll said he had seen Teddy pale and without pants, and Kevin's room, where a cursed folder of nudes tattooed an image on Megan's and Terry's arms. Tuti and Megan went to the carnival, where Megan met Drusille, who had seen a very gray Teddy repeating "The hive hungers" 00:33:48 and whose partner Yui was missing, while Cleets took Tuti to a pocket-dimension hot spring where a vine appeared and he drowned it. Terry and Seven found vine tentacles in the greenhouse that ran under the Vice Dean's building, and Seven's animated portraits were destroyed at the art walk. Megan reported that Drusille had bitten her own hand and stared down a hole; in Drusille's room Seven's mirror reported a living shadow, and Seven touched her vanity to Terry's eye and the whole vanity turned gold. On Thursday the mirror found Kevin hiding under his bed, and he said a plant thing had tried to drag him down below. Terry, Tuti and Seven met their parents on the Quad while Megan's did not come, the four received pesticide from Cleets, and at the talent show Drusille opened a red portal into the Vice Dean's basement, where Terry tore open a car-sized plant, the others' pesticide stakes killed it and the missing students came out as footsteps and keys approached. 00:02:59–02:09:02
Shriek Week, episode 4: Van Helsing's Party
In the basement a bearded man came down the stairs and said he was Teddy Prime, born thousands of years ago and the source of the clones; Tuti jammed a pesticide stake into his mouth, and his head popped and grew back. He took back his golden eye from Terry and said the clones were a deal with the vice dean, Seven's brujería showed her his memories of thousands of years, and he left to look for Teddy XIV. The plant's core was dead, the Vice Dean's office was empty and the Quad tree was a ring of dead grass. On Friday the Vice Dean's head sat on his desk while his body typed, and he described a boogeyman-like shadow creature and warned them not to sell to the living shadow; at the open mic Seven's poem won Korra as her girlfriend. At Van Helsing's party Tuti broke off with Cleets, and a gray Teddy XIII, who had talked to the Hive, appeared outside, where Terry ripped out his throat as a smoky hand came to take him away. Terry then dived into the pool after Asterith, surfaced with a full head of hair and heard Teddy Prime's voice in his head say, "You're welcome." 01:38:12 00:02:53–01:39:10