Three week after the event of Split, Saint David Dunn (David Bruce Thomas Willis) work with his now adult son Chief Joseph in use his superhuman ability to protect people from criminal under a new assumed name know as “The superintendent”. Saint David learn from Chief Joseph that Kevin Wendell Crumb (James IV McAvoy), who suffer from dissociative personal identity upset which supply his nickname “The host”, has a grouping of cheerleader up in a storage warehouse. Saint David travel to liberate them but meet one of Kevin’s personality know as “The animal,” and the result battle spill out into the street. The City of Brotherly Love police force section are name lead to the eventual gaining control of both Saint David and Kevin. The two are send to a mental establishment where Elijah monetary value (Samuel L. Glenda Jackson), David’s curse enemy who is besides know as “Mr. Glass”, is be keep.