The hype is real. Captain America Civil War aka The Avengers 2.5 is the best Avengers film out there yet. What works so well is that whilst it is 'masked' as an Avengers film, it really works as a Captain America film, concluding the initial trilogy, that just kept getting better with each installment.
After the events of New York, Washington and most recently in Nigeria, the Avengers' actions are called into question, with governments wanting to monitor and police the enhanced human 'race', which divides the group, with Tony Stark heavily for the bill, and Steve Rogers against.
When Bucky Barnes is seen at the scene of an explosion for the signing of the Sokovia accords, the Avengers are tasked with bringing him in, whilst Steve fights to keep him alive, making him a wanted criminal also.
Believing that his best friend Bucky is framed, Captain America goes against all odds and the other Avengers in order to prove Bucky's innocence.