Tangent universe

Rating: 7/10 (5 March 2016)

I have to say that the film is entertaining but told in a deliberate and extremely complicated way, that it need to be gutted afterward. This is its original sin to me, and it's a shame.
The plot isn't easy because the premises are themselves too complicated and not very rational.

SPOILER -

Occasionally the time can "corrupt" for unknown reasons and create parallel realities called Kickbacks, or Tangents, Universes. These unstable temporary realities seems destined to collapse on themselves and causing the destruction of existence. At the same time, they form a kind of space-time vortex, when the Tangent Universe is about to collapse, that allows the journey in time and that can be traced back to the point of their origin.
The "Artifact" (the airplane engine) is the sign of the birth of a Tangent Universe, usually made of metal and his sudden appearance cannot be explained rationally.
The "Living Receiver" is chosen as a normal human being (Donnie Darko), without explications, to return the Artifact before it causes the destruction of the universe, through the space-time vortex. To do this, the Living Receiver receives various powers and it is often tormented by nightmares and visions for the duration of the phenomenon.
Also, who die in the Tangent Universe can return with powers, to help the Receiver to fix things, and that's why Donnie kills Frank in the parallel reality, to use him as a guide. Every event, every person next to him (the Manipulated Living) must lead Donnie to complete its mission by creating a compelling reason for the appearance of the engine and allowing the safe closing of the Tangent Universe.
To achieve this our hero, Donnie uses the powers it holds as Receptor and take advantage of the opening that is created while the Tangent Universe is dying to let engine that is detached from the airplane back in time to the night of the twenty-eight days before, to fall on the house, killing Donnie and clear the Tangent Universe.
Donnie chooses not to avoid the destiny and sacrifice himself.
The characters we see in the final sequence suggest that they somehow remember something happened during Tangent Universe.

END SPOILER -

Now, being me a fan of the Luc De Vauvenargues aphorism about language: "Clarity adorns deep thoughts", I must say that this movie doesn't clarify itself and this is way I can't give it an higher score. The director Richard Kelly, who is also the writer, only secondarily, by the director's cut, helps the viewers to extricate themselves, but it is too late, the film still deliberately overly cryptic and intricate, which does not make it completely palatable to my taste in the first instance.
7+/10