Here are a few things to know before watching Ant-Man and the Wasp: Quantumania:
1. It is a Marvel Cinematic Universe (MCU) movie: Ant-Man and the Wasp: Quantumania is part of the MCU, which is a shared universe of superhero films produced by Marvel Studios. It is the third installment in the Ant-Man film series and the 32nd film in the MCU.
2. Previous Ant-Man films: It would be helpful to have seen the previous Ant-Man films, namely Ant-Man (2015) and Ant-Man and the Wasp (2018), in order to fully understand the characters and their relationships. Additionally, some events from the previous films may be referenced or have an impact on the plot of Ant-Man and the Wasp: Quantumania.
3. Quantum Realm: The Quantum Realm is a fictional realm that is introduced in the Ant-Man films. It is a subatomic dimension where the laws of physics are different, and time and space behave in unexpected ways. Understanding the concept of the Quantum Realm is important for understanding the plot of Ant-Man and the Wasp: Quantumania.
4. The Multiverse: The Multiverse is a concept that has been introduced in other MCU movies, particularly in Doctor Strange (2016) and Spider-Man: No Way Home (2021). It refers to the existence of parallel universes and alternate realities, and it is possible that the concept of the Multiverse may play a role in Ant-Man and the Wasp: Quantumania.
5. Cast and Crew: The film is directed by Peyton Reed, and the main cast includes Paul Rudd, Evangeline Lilly, Michael Douglas, Michelle Pfeiffer, and Kathryn Newton. Additionally, Jonathan Majors will be playing a significant role as the villain Kang the Conqueror.
Overall, it would be helpful to have seen the previous Ant-Man films and have a basic understanding of the Quantum Realm and the concept of the Multiverse before watching Ant-Man and the Wasp: Quantumania.