You play as an office intern who starts alongside two others. The boss introduces the company and jokes that you have to say "yes" to go far. One of the interns in particular is excited because she is someone who loves saying "yes" and pleasing managers. It seems like the game is a social commentary on people being overly obedient to please managers.
Your character struggles to speak but he finds a cassette player with a motivational tape which teaches him to say "No" with confidence. In each chapter, your character listens to more of the tape, and so he learns new powers like charging up your "NO" for a more forceful statement, or sarcastically laughing, clapping or nodding which catches people off guard, allowing you to shout them down. You also learn different tones: cold, heated, crazy, lazy. However, it doesn't actually make a difference even though the Tutorial makes out that these different types are necessary against some people.
This manager has left his lunchbox at home so he steals yours. This leads you to chase him down to get it back, constantly stopped by your colleagues for random questions which you shoot them down with your newly learned word: saying "no".
"Can you get me a coffee?" "no"
"Can you copy these documents?" "no"
There's a few dialogues where you can wait for something different to happen but nothing bad happens if you say "No" to them. The movement is automatic - on-rails movement. The game hasn't really got any gameplay, it's more of a humorous experience, relying on the comedy, quirkiness, and the ragdoll/destruction you see when you say "no" and knock them down. I say it does succeed; it did keep me entertained for the 1.5 hours. If it was longer, then it would be tedious.
It reminds me of Weebl's cartoons; it's wacky style, combined with some of the "No" voice samples which sounds like "Weebl and Bob"'s way of speaking. You do have several languages to pick with a couple of variations of voices. I haven't seen Monty Python, but I am assuming the start of the game with the wizard is a reference to the Knights that Say "ni"; might be wrong on that though.