Season 5 of Marvel's Agents of S.H.I.E.L.D. (2017–2018) is widely considered one of the series' most ambitious chapters, taking the team into both deep space and a dystopian future. Originally written with the potential to be a series finale, it focuses on the concept of an "inescapable time loop" and the team’s desperate attempt to prevent the literal destruction of the world. The season is split into two distinct thematic blocks: