Marvel-s Agents Of S.h.i.e.l.d. - Season 5 [exclusive] 90%

Coulson has been dying since The Avengers (2012). By Season 5, the GH.325 serum in his blood has run its course. The team spends the final episodes desperately trying to save him, but he refuses to take the "Centipede Serum" that would heal him because it requires using the very Gravitonium that will destroy the Earth.

The answer is a with an escape hatch. The team lives through a future that will happen unless they break the cycle. Future Yo-Yo gives clear instructions: “Let Coulson die. Do not save him.” But the team, being S.H.I.E.L.D., refuses. Their refusal almost causes the Destruction of Earth. It is only when they finally accept Coulson’s death that the loop breaks. Marvel-s Agents of S.H.I.E.L.D. - Season 5

The season finale, "The End," is aptly named. It wraps up the Graviton threat in a way that feels massive. When Coulson and May sit on the beach in Tahiti, watching the sun set, it feels like a true series finale. It is a quiet, poignant ending to a chaotic journey—a rarity in the "always set up a sequel" nature of comic book media. Coulson has been dying since The Avengers (2012)

After managing to return to their original timeline (thanks to a white monolith and a gravity storm), the team faces a terrifying new mission: prevent the future from happening. They know that Earth is destroyed in a cataclysm caused by Daisy Johnson—or so the history books claim. The final twelve episodes become a ticking clock conspiracy thriller. The enemy shifts from alien overlords to a human insurrectionist named Hale (Catherine Dent), who is working with the Confederacy (a cabal of alien races) and, shockingly, Hydra. The answer is a with an escape hatch