A possible concise summary is:
Junior makes Joseph a paper family to cheer him up, but Joseph gets too attached and starts acting weird. Junior tries to make Joseph realize that paper people are not real, but ends up making him lose his family and feel lonely again. The video ends with a random fight scene.
Here are the key facts extracted from the text:
1. Junior, Bowser and Chef Pee Pee are having mac and cheese for dinner.
2. Joseph shows up at Junior's door with a bowl and sings "put it in my bowl daddy".
3. Junior makes up a paper family for Joseph to make him feel better.
4. Joseph's paper grandmother and baby brother die and his paper parents disown him.
5. The text is a transcript of a video from the YouTube channel SuperMarioLogan.