Flawed logic enveloped by drama and mistery (like the series Lost)

Rating: 2/10 (13 March 2018)

The story before the movie starts (it's not a completely linear movie): Lena was a woman in the military when she met and fell in love with Kane who was also working there. She left the military, but they remained a couple. Kane went on long secret missions and Lena had an affair with her colleague. Kane found out about it, but still loved her. Lena decided to stop the affair. Away from all that, a meteor falls on a lighthouse. A weird event named "the shimmer" starts growing from it. Kane is sent on a secret mission to explore it. Lena for 1 year waits for him to come back.
Movie starts: *Kane* comes back home acting weirdly. After a brief conversation he starts bleeding. Lena calls an ambulance and goes inside with him. The ambulance is stopped by a back ops group. They drug her and take them both to a secret facility close to the Shimmer.
*Kane* seems to be dying. Lena volunteers to go in the shimmer with a group of 4 other scientists to find answers to help Kane. All the scientists have something screwed with their lives, and so they are volunteering, even though they believe they might die.
The shimmer is an area that is growing that people and machines go in, but nothing goes out, except for *Kane*.
They go inside, and all of them lost their memories of the last 3 or 4 days, and as already expected, have no communication with the outside through technology. They start finding plants and animals that have mutated. The closer they get to the lighthouse, the more mutations they find. They find a video card that shows that a person on the last group that entered the shimmer suffered a mutation. They find plants that grew in the shape of people. The physicist says that the shimmer is a prism that reflects back waves, and that's why the genes of the plants have mutated to have the forms of humans (just so you know, that's not how science works in our world, but let's say that that's how it works on this parallel universe where the movie takes place). The biologist (Lena) puts some of her blood on the microscope and sees she is mutating. The psychologist feels that she is mutating as well, and she rushes forward alone with the mission, so that her mind isn't changed by the end of it. The physicist decides to become a plant and goes away and becomes a plant.
Lena is now alone (2 of the others had been killed by mutated creatures before) and goes to the lighthouse finding trees that look like fractals made of glass and human bones along the way.
In the lighthouse she finds a video camera, a hole in the wall and a hole on the floor (where the meteor came through), and the burned body of a man.
She plays the video on the video camera and sees Kane sitting in the position where the burned body would be. Kane is speaking to *Kane*, how his insides are mutating and his mind is changing, and he can't take it, so he burns himself with a phosphorus grenade.
Lena now feels horrified that the body of the burned man was his Kane all along, and that the *Kane* who met her at her house was someone else.
She hears whispers coming from the hole. It's the psychologist, she's at the center of the hole. She says the source is a living thing and is inside her. The source expands and consumes the psychologist, and transforms into a floating blob. Lena gets close to the blob, and a drop of her blood gets into it. This makes the blob copy her shape, making a *Lena*. Lena fights with *Lena*, and so *Lena* fight back. Lena sees tha *Lena* is only mirrorring her, but does not know many things. Lena takes a grenade and hands it to *Lena*, and takes the pin off and gets out of the lighthouse. *Lena* burns, and ends up touching other things and spreads the fire to all of the lighthouse. Out of the lighthouse, Lena sees many other mutations burning too.
Skip to the future. Lena is being debriefed. When the lighthouse burned, *Kane* became healthy again. Lena goes to meet *Kane*. They hug. Both of their sets of eyes change color.
End of movie.
Discussion: What does all of this mean?
Basically it's founded on the (erroneous) premise that life started when a meteor came from outside our world (a seed of sorts) and hit us and started spreading life and mutations. So someone asked themselves, what if another of this seeds came to earth? Since the logic is flawed, they wrapped some mysteries and drama around it to make us keep watching it beyond what we should (like they did with the series Lost).