Like the title says, it's basically like vGet, allows you to play embedded videos in some websites. Compatibility is not as good but the app is free and will probably improve.
In order to get it working correctly i had to select the "cast icon" inside the app and THEN, try to play a video. There's a small search like button to search for embedded video, if it doesn't start playing immediately. You should also try to select full screen mode, if the embedded video allows it.