A possible concise summary is:
Two friends decide to summon various monsters from a recipe book and have a party with them. They use a serum of goodness to make the monsters friendly, but it wears off soon and the monsters turn against them. They call a seller who is also a monster and he tells them to gather all the monsters in one place and send them to a portal to a parallel universe. One of the friends acts as a bait to lure the monsters, but he gets trapped in the portal with them. The seller reveals that he tricked them and escapes with the recipe book.
Here are some possible key facts extracted from the text:
1. The text is a transcript of a video where the speakers try to summon and party with monsters using cakes.
2. The speakers are Alina, Pashka and a cameraman, and they use a recipe book and a serum of goodness to make the cakes.
3. The speakers also interact with a seller who provides them with ingredients and advice on how to deal with the monsters.
4. The monsters include Jeff, Luna, the man outside the window, Cartoon Dog, and others.
5. The monsters turn evil after eating the cakes and kick the speakers out of their studio.
6. The seller opens a portal to send the monsters to a parallel universe, but Pashka gets trapped with them.