Ben's adventures continue, owning an amazing device in the form of a watch, the guy can transform into a variety of characters in the Universe. Thanks to the watch, he manages to fight powerful opponents with incredible cosmic power. An ordinary person can't exactly cope with an alien mind aimed at conquering the planet, only the main character can resist monsters unknown to humanity. More than once the guy has saved the Galaxy with the help of Omnitrix, but this time everything may change. Ben notices that his device is starting to work in a completely different way, a countdown appears on the dial. After a short time, the clock will have to self-destruct and leave the guy without support in this not simple cosmic world. It is necessary to find a way to stop this process, but for this you will have to find the creator of Omnitrix. Ben and Gwen go to a distant planet, where, according to their information, there is an inventor serving his prison sentence. Tetrax will help them in this, having decided that teenagers themselves will not be able to cope with this task.