The CW has released the synopsis for the "Arrow" Season 4 finale -- airing May 25 -- which has been given the title "Schism."

Despite the episode's name, the synopsis teases an unexpected team-up for Oliver (Stephen Amell), with "a surprising force," in an effort to definitively stop Damien Darhk (Neal McDonough).

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Take a look at the synopsis for "Schism" below:

SEASON FINALE  ARROW "Schism" - (8:00-9:00 p.m. ET) (Content Rating TBD) (HDTV)  OLIVER TEAMS UP WITH A SURPRISING FORCE TO STOP DAMIEN DARHK - Oliver (Stephen Amell) teams up with a surprising force in an attempt to stop Damien Darhk (guest star Neal McDonough) and his magic once and for all.  John Behring directed the episode with story by Greg Berlanti and teleplay by Wendy Mericle and Marc Guggenheim (#423).  Original airdate 5/25/2016.

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"Arrow" airs Wednesdays at 8/7c on The CW.