Nothing in this film was believable to me. It felt like a parody.

In a world where people think Apollo 11 was fake, a guy randomly flies to another galaxy and walks other planets like it's no big deal, after zero training and literally five minutes after having discovered he would do that, leaving his two underage kids behind.

Suddenly, they mix space travel with time travel that modifies the past. Because, obviously, this is realistic.

I don't even know how to put in words how much the "a few minutes here means 23 years back on Earth" was ridiculous.

The overall unconvincing and unbelievable feeling is enhanced by the surprisingly very poor CGI / 3D.

Also, the main character's actor doesn't know to articulate and it's deeply annoying.

The only two positive things I have to say: there were two or three really gripping moments, and the music is an incredible masterpiece.

But overall, yes, this film felt so deeply uncovincing. Nothing felt real.