Klaus Mikaelson and Elijah Mikaelson are two of the main characters in the television series “The Originals”, which is a spin-off of the popular series “The Vampire Diaries”. The show follows the lives of the Mikaelson family, who are the original vampires, as they navigate their relationships with each other and other supernatural creatures.

In the series finale of “The Originals”, which is the 13th episode of the fifth season, both Klaus and Elijah die. The episode, titled “When the Saints Go Marching In”, follows the Mikaelson family as they prepare for the final battle against their enemies.
Throughout the episode, Klaus and Elijah are both dealing with the consequences of their actions. Klaus has sacrificed himself in order to protect his daughter Hope, who is a powerful witch, and Elijah is dealing with the guilt of having caused the death of Hayley Marshall, the mother of Klaus’ child.
As the battle begins, Klaus and Elijah fight together against their enemies. They are eventually able to defeat their enemies, but in the process, they both sustain fatal injuries. In a heart-wrenching scene, Klaus and Elijah share a final goodbye as they embrace each other and prepare to die.
Before he dies, Klaus asks Elijah to take his life as well, as he can’t imagine living without him. Elijah initially refuses, but ultimately agrees to end his own life as well, knowing that they will be able to find peace together in death.
In a final scene, Klaus and Elijah are seen walking together through a field, seemingly at peace and free from the burdens of their immortal lives. The show ends with the implication that the two brothers have finally found the happiness and peace that they had been searching for.
In conclusion, Klaus and Elijah both die in the series finale of “The Originals”, as they sacrifice themselves in order to protect their family and defeat their enemies. The emotional final scene of the show suggests that the two brothers have finally found peace in death, after centuries of struggle and pain.