A possible concise summary is:
The video is a compilation of reactions from different people who played the final part of the video game The Last of Us. They watched the cutscenes and played the gameplay where Joel, the main character, decided to save Ellie, a young girl who is immune to a zombie infection, from being killed by the Fireflies, a rebel group who wanted to use her brain to make a vaccine. Joel lied to Ellie and told her that there were other immune people and that the Fireflies gave up on finding a cure. The video ends with the players sharing their thoughts and feelings about the game and thanking the viewers for recommending it.
Here are the key facts extracted from the text:
1. The characters Joel and Ellie are involved in the events.
2. They reach a hospital mentioned by the Fireflies.
3. Ellie is immune to a mutation that could lead to a vaccine.
4. Surgery on Ellie is necessary to create the vaccine but would result in her death.
5. Joel decides to save Ellie instead of allowing the surgery.
6. Joel lies to Ellie about the Fireflies stopping their search for a cure.
7. The game ends with Joel having saved Ellie, and they both leave the hospital.
Please note that these are simplified facts extracted from the provided text, which appears to be a transcript of gameplay commentary.