Season 5 - Episode 20

## Season 5, Episode 20 - The Underground

The episode begins with the Bing Bunch arriving at the Underground, a hidden world where monsters live, after following a mysterious portal that appeared in their backyard. They meet Frisk, a human child who fell into the Underground and befriended the monsters. Frisk tells them that they are on a mission to break the barrier, a magical wall that prevents the monsters from leaving the Underground and returning to the surface. Frisk says that they need to collect seven human souls, which are the only thing that can destroy the barrier. Frisk says that they already have six human souls, which they obtained from the previous humans who fell into the Underground and died. Frisk says that they need one more human soul, which they plan to get from Asgore, the king of the monsters, who has been killing humans and collecting their souls.

The Bing Bunch is shocked and saddened by this story. They sympathize with Frisk and the monsters, who have been trapped and oppressed by the humans for centuries. They also admire Frisk’s courage and determination, who has been trying to find a peaceful solution to end the conflict between humans and monsters. They decide to help Frisk with their mission and join them in their journey to the barrier.

The episode then follows the adventure of the Bing Bunch and Frisk as they travel through the Underground and encounter various monsters and places. They see:

* The Ruins, where they meet Toriel, a kind and motherly goat monster who takes care of lost children. She welcomes them and offers them shelter and hospitality. She also tells them about the history and situation of the monsters, who were banished by the humans after a war long ago.
* Snowdin, where they meet Sans and Papyrus, two skeleton brothers who are comedians and guards. They joke with them and challenge them to puzzles and games. They also tell them about their dreams and aspirations, such as becoming famous or joining the Royal Guard.
* Waterfall, where they meet Undyne, a fish-like monster who is the leader of the Royal Guard and a warrior. She chases them and tries to kill them, as she believes that they are enemies of the monsters. She also tells them about her loyalty and duty to Asgore, who she respects and admires.
* Hotland, where they meet Alphys, a lizard-like monster who is a scientist and a nerd. She helps them and guides them through her lab and her inventions. She also tells them about her insecurities and secrets, such as her crush on Undyne or her experiments on monsters.
* The Core, where they meet Mettaton, a robot monster who is a celebrity and a star. He entertains them and tests them with his shows and quizzes. He also tells them about his fame and ambition, such as becoming famous or escaping to the surface.
* New Home, where they meet Asgore, a lion-like monster who is the king of the monsters and a gardener. He greets them and invites them to his home and his garden. He also tells them about his grief and guilt, such as losing his wife Toriel or killing humans.

The episode ends with the Bing Bunch and Frisk reaching the barrier, where they face Asgore in a final battle.

Frisk tries to talk to Asgore and convince him to stop killing humans and collecting their souls. Frisk says that they can find another way to break the barrier and free the monsters.

Asgore listens to Frisk but says that he cannot stop now. He says that he has made a promise to his people that he will break the barrier and bring back freedom to the monsters. He says that he has no choice but to fight Frisk.

Frisk refuses to fight Asgore but says that they will not give up their soul either.

Asgore says that he is sorry but that he must do what he must do.

He then attacks Frisk.

The Bing Bunch tries to help Frisk but they are stopped by Flowey, a flower monster who is actually Asriel, Asgore’s son who was transformed into a soulless creature by Alphys’ experiments.

Flowey says that he wants to see Frisk die so that he can reset everything and play with them again.

He then uses his power to block their way.

Frisk faces Asgore alone in a life-or-death battle.

However, before Asgore can deliver the final blow, he is interrupted by Karkat Vantas, who arrives at the scene with a group of trolls from Alternia.

Karkat Vantas is one of the few surviving trolls from the Sgrub session, who has been living on Earth with his friends after their planet was destroyed by the Vast Glub. He has been contacted by Toriel, who asked him for his help and guidance in the Underground.

Karkat Vantas is a leader and a mediator for the trolls. He has been teaching them how to behave and interact with humans and other species, such as vampires, werewolves, ponies, etc. He has also been preventing them from causing trouble or conflict with anyone, especially with the authorities and the enemies. He has also been finding them a suitable place to live and work, as well as some friends and allies.

Karkat Vantas is also a friend and an ally of Frisk. He has been supporting and helping them with their mission to break the barrier and free the monsters. He has also been advising and encouraging them to find a peaceful solution to end the conflict between humans and monsters.

Karkat Vantas intervenes in the battle and stops Asgore from killing Frisk. He tells Asgore that he is making a mistake and that he should listen to Frisk. He says that Frisk is right and that there is another way to break the barrier and free the monsters.

He then reveals that he has brought with him seven troll souls, which he obtained from his friends who died in the Sgrub session. He says that he is willing to donate them to the cause and that they can use them to destroy the barrier.

He then explains that troll souls are different from human souls, as they are more powerful and resilient. He says that troll souls can withstand the barrier’s magic and that they can also fuse with other souls, creating a stronger soul.

He then suggests that they can use the troll souls to fuse with the human souls, creating a hybrid soul that can break the barrier.

He then asks Asgore if he is willing to accept his offer and spare Frisk’s life.