The book about this boy Mike who is 17 and he thinks growing a moustanche is cool. Then when he goes to the movies the lady charged him full price. So he goes to his grandma which his mom told him not to meet because of the moustache. His grandma thinks that he is her husband which she wanted to say sorry but could do it in time. So Mike learns that his grandpa had the moustache and that they had a fight because the grandma thought that the grandpa was cheating on her.
Mike then finds out that the moustache had a lot of bad stuff so he goes to his house and shaves it off.