"Sam I Am" pesters an unnamed character to taste a bizarre-looking dish of green eggs and ham. The unnamed character declines, claiming to dislike green eggs and ham. However, the persistent Sam I Am will not cease following the unnamed character around and trying to encourage him to try the green eggs and ham, asking him if he will sample the dish if he does it in various locations (like a boat or a house) and with an assortment of dining partners (like a goat or a mouse). At the end, the unnamed character gives in to Sam I Am's pestering and takes a bite of green eggs and ham, which he finds he does indeed like.