The story revolves around Charlie, a morbidly obese man who is dedicated to teaching his students the art of crafting well-written essays. Despite his professional focus on the "body" of a text, Charlie neglects his own physical health, spending most of his time at home on his couch. He is cared for by his best friend Liz, a nurse, and is estranged from his ex-wife and child.

Charlie's life changes when he receives an unexpected knock at his door. The visitor, a young man named Thomas, is startled by Charlie's appearance and offers to call an ambulance. However, Charlie, concerned about the cost of healthcare, refuses the ambulance. The situation highlights Charlie's isolation and deteriorating health, as he struggles with his weight and personal relationships while remaining committed to his teaching.