Here he is, probably trying to head home from a long day of scurrying for cheese, and thinking it'd be faster, decides to take the escalator. But there's a twist! Now this rat finds himself endlessly scurrying down an escalator that won't allow him to reach the platform. No matter how hard he tries, no matter how close he gets, there is no end in sight.
And isn't that just the story of life? We are all this rat, trying to get to where we think we should be, when life decides it has other plans in store for us. With no other alternative in sight, we must then attend to what has been thrown at us.
Sadly, the video stops short before we learn if the rat made it off or not. But I guess that's how all of us are meant to live: unaware of our fate.