This is The Walking Dead react to each other, this takes place in the timeline where Rick just found the group, season 1 they will react to the future and traumatic things, the characters Carol, T-Dog, Dale, Daryl, Merle, Sophia, Lori, Carl, Rick, Shane, Glenn, Andrea, Amy and Daryl's future Dog named Dog get teleported into the reaction room

(They know why they are there btw)