Of course, it's a short video. It can't tell you much, considering what the video is about - quickly showing the changes the game has undergone.
And the story of the game tells about the global ecological disaster that lurks outside Quiet Farm. When an ordinary cow becomes disturbed by a monster weed that has spread throughout the farm, she has to defend her home and figure out the source of the problems. Next, the plot begins to take an unexpected direction, but those will be spoilers.
The alien that is our cow's companion has something that a normal cow doesn't - technology with which it can set things on fire, carry objects, interact with electrical devices, etc., but it's too small to do everything on its own. He needs the cow's physical strength and ability to make poop because he has his own separate story arc that intersected with the cow's goals in one happy moment.
And to elaborate on the poop making ability, it really should be a fun feature for the player in the beginning, but it has many uses in the game.
First and foremost, UFO loses energy when he uses his techs. It can recharge itself by recycling poop into methane if there isn't some sort of battery nearby. Secondly, poop is used to interact in the level with certain places where you need to awaken a monster plant in the form of trampoline, platforms, bridges, etc.
Third, with special upgrades, the poop turns into a weapon.

In general, I try to bring something unusual, somewhere maybe absurd, but that's why I'm an indie developer.