It is night, and it always will be.

Eight friends are having dinner while a comet passes by (which one? We don't know, we don't care much).

And at the beginning, the smartphone displays break (yes indeed) and then no one has a signal (AAHHH! HORROR!), and the desktop has no network, and in the end, the power goes out (ohmygod).

All the nearby houses seem equally dark, but one over there instead shines with watts and lumens.

From here begins a carousel of parallel universes, split personalities, quantum mechanics and Schrödinger's cats, walks in the dark with multicolored glow sticks, books, broken glass, dice, colored markers, cut photographs, and photographs taken.

The entire movie practically takes place in a single room, it could have been a brick but instead fascinates and involves and even "envelops," like a spiral that seems about to inexorably collapse on itself towards an abyss that could lead to total self-annihilation as to absolute entropy.

But in the end, the day arrives and the light finally reassures us.

Everything seems to have resolved itself, a bit incidentally as it started.

But maybe not….

The film intrigues, very much so, it is shot with a shoestring budget, there are no famous actors or the slightest special effect.

Perhaps more than someone should remember that to make a GREAT science fiction movie, above all, you need a screenplay worthy of the name; the rest is often just embellishments that serve only as scenery.

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By sotomayor

 The film is practically from start to finish entirely based on principles of space-time physics applied to social behaviors and theories on the multiverse.

 'Coherence' keeps the viewer attentive for the entire duration of the film, and perhaps even afterward if they engage in discussions or reflections on an impossible theme.