I wouldn't necessarily watch the video, but I find it interesting that there are all these Rogue Planets moving around the galaxy. It would be very unlikely, but if one were to pass through the orbital plane of our solar system, then it could alter the orbit of one or more planets. There is a remote chance that this has happened before. Sometimes they talk about how planets get ejected from solar systems by massive objects.
Fortunately, the galaxy is very big, thus reducing the chance of having an encounter like this.