With the nation of Panem in a full-scale revolutionary war, Katniss (Jennifer Lawrence) confronts President Snow (Donald Sutherland) in the final showdown. Teamed with a group of her closest friends – including Gale (Liam Hemsworth), Finnick (Sam Claflin), Cressida (Natalie Dormer) and Peeta (Josh Hutcherson) – Katniss goes off on a mission with the District 13 unit as they risk their lives to liberate the citizens of Panem, and stage an assassination attempt on President Snow who has become increasingly obsessed with destroying her. Although rebels - including fellow victors, Johanna (Jena Malone), Haymitch (Woody Harrelson), and Beetee (Jeffrey Wright)- now control most of Panem, the Girl on Fire must still overcome one last challenge to win President Snow's "game" - to conquer the Capitol at the risk of losing her friends and loved ones. The mortal traps, enemies, and moral choices that await Katniss will challenge her more than any arena she faced in the Hunger Games as she realizes the stakes are no longer just for survival – they are for the future of Panem.
Source: Mockingjay part 2