After the devastating events of Avengers: Infinity War, the universe is in ruins due to the efforts of the Mad Titan, Thanos. With the help of remaining allies, the Avengers must assemble once more in order to undo Thanos' actions and restore order to the universe once and for all, no matter what consequences may be in store.
As the Avengers and their allies have continued to protect the world from threats too large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment - the fate of Earth and existence itself has never been more uncertain.
Jacoba Francisca Maria "Cobie" Smulders (born April 3, 1982) is a Canadian actress. She is known for her starring role as Robin Scherbatsky in the CBS series How I Met Your Mother (2005–2014) and as S.H.I.E.L.D. agent Maria Hill in the Marvel Cinematic Universe superhero franchise, starting with the film The Avengers (2012). Smulders' other films include Safe Haven (2013), The Lego Movie franchise (2014–2019), Results (2015), The Intervention (2016), and Jack Reacher: Never Go Back (2016). She also starred in the Netflix comedy-drama series A Series of Unfortunate Events (2017), the Netflix comedy series Friends from College (2017–2019), the ABC crime drama series Stumptown (2019–2020), and the FX true crime series Impeachment: American Crime Story (2021). Smulders made her theatre debut in the off-Broadway production of the Nora Ephron play Love, Loss, and What I Wore in 2010. She then made her Broadway debut in the revival of the Noël Coward comedy Present Laughter (2017), earning a Theatre World Award. Description above from the Wikipedia article Cobie Smulders, licensed under CC-BY-SA, full list of contributors on Wikipedia.