The Mortal Instruments: City of Heavenly Fire

The Mortal Instruments: Heavenly Fire is an Urban Fantasy film released in 2017 based on the 2014 novel by Cassandra Clare. It was a box office success and the sixth and final installment of The Shadowhunters Chronicles film series. It received mixed to positive reviews from critics which praised its direction, acting, pacing, action scenes, but criticized it for having too many characters and too many details about future installments of the franchise. It was the 3rd highest grossing film of 2017 and the highest grossing film of the Mortal Instruments series.

Plot
The Los Angeles Shadowhunter institute is attacked by Sebastian Morgenstern who kills and forces several of its members, including a middle aged Shadowhunter named Andrew Blackthorn, to drink from the Infernal Cup causing them to become Endarkened Shadowhunters. They Kidnap one of it's members a boy named Mark Blackthorn but a few, Emma Carstairs and the Blackthorn siblings escape to the Glass City of Alicante.

The New York Institute hears about attack in Los Angeles. Sebastian had been attacking several institutes around the world in a conflict known as the Dark War, Bangkok, Buenos Aires, Oslo, Berlin, Moscow and Los Angeles were attacked leaving few survivors including the Blackthorn children. The Institute travels to Idris to reconcile with the Lost Angeles institute who's members are interrogated using the Mortal Sword.

Simon's hiding with Maia and Jordan in New York, He is currently in a love triangle with Izabella and Maia. Maia and Jordan are attacked by Endarkened in the shadow world of New York. During the fight, Simon is captured by vampires. Seelie Queen and Sebastian are revealed to be working together and are in a sexual relationship. Sebastian and the Seelie Queen reveal they plan to massacre the Praetor Lupus werewolf organization. Jordan and Maia continue to search for Simon. Simon is held hostage by the new vampire leader, Maureen. The Endarkened attack the werewolf headquarters, Jordan and Maia investigate and fight Sebastian but Jordan is killed.

Jace and Clary find a sword called Heosphoros that originally belonged to Jocelyn and buy it and have it blessed. A battle of the Citadel breaks about between the forces of Idris and the Endarkned Army. Meanwhile, Izzy and the team save Simon from the vampires and free him, meanwhile Maia organizes an alliance between downworlders to stop Maureen and takes over the werewolf pack. Jace and Clary use Heavenly Fire to purify a silent brother named Brother Zachariah who is reunited with a Liberian named Tessa Grey.

Clary, Jace, Isabelle, Alec, and Simon travel to the Seelie Queen's realm and fight Meliorn, Alec kills Meliorn and the team finds a passageway from the realm of Faerie to Edom to destroy Sebastian's army. Clary uses a rune to transfer heavenly fire to the Heosphoros sword and uses it to stab Sebastian. Sebastian reverts to an uncorrupted Nephilim form before dying and destroys the Infernal Cup destroying the Endarkened army. To get out of the demon world, Magnus Bane makes a deal with his demon father, Asmodeus, his immortality for an escape. However, Simon offers his vampire immortality and memories of his life since then. Five months later, Simon slowly regains his memories and the team spends time together at Luke and Jocelyn's wedding.

In a post-credits scene, Simon drinks from the Mortal Cup and becomes a Shadowhunter. The New York Institute introduces him to the Shadowhunter Academy

Cast

 * Lily Collins as Clary
 * Jamie Campbell Bower as Jace
 * Robert Sheehan as Simon
 * Kevin Zegers as Alec
 * Lena Headey as Jocelyn
 * Aidan Turner as Luke
 * Mila Kunis as Amatis Graymark
 * Jemima West as Isabelle
 * Godfrey Gao as Magnus Bane
 * C. C. H. Pounder as Dorothea
 * Ash Santos as Maia Roberts
 * Andrew Garfield as Sebastian Morgenstern
 * Nat Wolff as Raphael Santiago
 * Amber Heard as Camille Belcourt
 * Ryan Potter as Jordan Kyle
 * Bridget Regan as Elaine Lewis
 * Jessica De Gouw as Lilith
 * Elle Fanning as Maureen Brown
 * Christina Hendricks as Seelie Queen
 * Alia Shawkat Rebecca Lewis
 * Damien Lewis as Azazel
 * Aaron Eckhart as Raziel
 * Kate Beckinsale as Maryse Lightwood
 * Josh Lucas as Robert Lightwood
 * Adrian Pasdar as Asmodeus
 * Daniel Padilla as Brother Zachariah
 * Mckenna Grace as Emma Carstairs
 * Emilia Jones as Tessa Gray
 * Ryan Kwanten as Andrew Blackthorn
 * Andrew Barth Feldman as Mark Blackthorn
 * Zackary Arthur as Julian Blackthorn
 * Harry Treadaway as Meliorn

Critical Reception
The Mortal Instruments: City of Heavenly Fire received mixed to positive reviews from critics. Review aggregator Rotten Tomatoes gives the film an approval rating of 67% based on 250 reviews, with an average rating of 7/10. The site's critical consensus reads, "The Mortal Instruments: City of Heavenly Fire may be extremely uneven, but it's a well deserved and entertaining conclusion to the series." Metacritic gives the film a score of 55 out of 100, based on 150 critics, indicating "Mixed or average reviews". Audiences polled by CinemaScore gave the film an average grade of "A+" on an A+ to F scale.

Future
Starting in 2018 the developers produced a prequel trilogy entitled The Infernal Devices. The first film "The Clockwork Angel" was released in 2018.