These short reels are 8-9 minutes of excellent footage and storytelling.
Please note: this review may have mild spoilers as this docuseries acts as a "catch-up", reminder and/or telling of a characters' inception in the Marvel Cinematic Universe up until now in phase 4 collated in 8-9 minutes.
In case you haven't seen a Marvel Cinematic Universe movie before, any or a couple, this is 9 glorious minutes cleverly cut from multiple films that act as a highlight reel of a character's journey or backstory through the MCU into Phase 4. Extremely important if you want to learn about a character before heading into DisneyPlus's WandaVision, starring The Vision and Wanda Maximoff with supporting cast.
The Vision is essentially an idea formed from various members of The Avengers. Derived from J.A.R.V.I.S (Just A Rather Very Intelligent System) an Artificial Intelligence created by Tony Stark. As an A.I, JARVIS helps Tony in various ways including helping him to prep and build various Iron Man suits as JARVIS was the main Central Processing Unit in charge of other systems and machinery so acted as a "hands-free" option for Tony as well as having access to the Internet and other systems especially in the field. However when Tony decides to create an alternative A.I named Ultron to protect the world from threats with the help of Bruce Banner, Ultron becomes hostile "kills" JARVIS and escapes via the Internet. Ultron plans on upgrading and evolving himself by creating a new indestructible synthetic body before eliminating all life on planet Earth by causing an Extinction Level Event, but before Ultron is able to insert himself into his new body, Tony inserts JARVIS into it whilst Thor awakens it after having a Vision of it becoming the tool that will help them. The Vision is awoken.
After defeating Ultron, Vision does not take any sides when the Avengers are fighting each other, but as he is directed to watch over Wanda, the pair fall in love and run away when Wanda escapes captivity. Some time later, Thanos and The Black Order come looking for Vision's Mind Stone, his power source, which leads to a fight that leaves Vision wounded. In a race to save Vision's life the Avengers must fight Thanos' forces and try to safely remove the Mind Stone without killing Vision and destroy it before the Mad Titan finds him and kills him in the process or removing it, even if it means if the love of his life has to destroy the Mind Stone to keep Thanos from killing half of life in the universe. The Vision dies twice, once at the hands of his love, second at the hands of Thanos.
These 9 minutes are a collection of clips, but if you were to get the backstory so far surrounding this character and all the events that lead up to WandaVision, you must watch Iron Man, Avengers, Avengers: Age of Ultron, Captain America: Civil War, Avengers: Infinity War & Avengers: Endgame.
This is an excellent recap for both fans and newbies alike.
WandaVision picks up after these events.