Conductor 786 is gifted with contentment and a dog. He succeeds in obtaining a vacation which he spends on the beach, where he makes the acquaintance of Dora and her mother, who accompany him to the hotel, where during his absence the landlord has hung out a sign which reads: "Henceforth No Dogs Will Be Permitted on Premises." He immediately strikes up a quarrel with the landlord, insisting that either his dog get in or his things come out. The landlord obliges him by throwing out his trunk through the window. At the suggestion of Dora's mother to get married, he immediately proposes to Dora, who accepts down his meal in order not to hurt her feelings. A few weeks of this regime and Conductor 786 becomes sick. His pulse is abnormal and his tongue whiter than chalk. He decides that his is a case for the doctor. To the doctor he goes. Dora is too wise to eat her own cooking. She hands her portion to the dog, while she goes to a restaurant to enjoy a hearty meal. The dog no sooner finishes his share than he sets up a dismal howl and slinks off to the hospital for cats and dogs. Conductor 786 in the meantime reaches the office of Dr. I.M. Sickening, but gets cold feet at the door. He is encouraged, however, by seeking a patient who is evidently bristling with health exit into the doctor's office. He decides to wait his turn on the stoop. A few moments later aforesaid patient issues from the office, all bandaged up and limping along on crutches. Conductor 786 is about to make himself scarce when the doctor gets hold of him and forces him into his office. There he stretches him out on a block the of sides of which are decorated with carpenter's tools, and after thumping him up, declares indifferently that his case was fatal but exceedingly interesting. He then mixes him a potion composed of three different kinds of poison and inserts a cherry in it for appetite's sake and a straw to facilitate absorption. The Conductor watches the doctor make preparations to transfer him into the Life Hereafter, then decides that he is not as far gone as all that and dives head foremost through the window. He makes for home, where he tests his temperature by inserting a wall thermometer into his mouth. When he discovers that he has 107 degrees, he concludes that he is as good as dead and collapses on his bed. There he has a terrible dream. He sees himself at the gate of Heaven, to all intents and purposes as sweet an angel as ever was. Unfortunately, St. Peter is at the gate, and he insists that the conductor's ticket was good only for the subway. The devil, who has the doctor's face, immediately pounces upon him and insists on his taking the medicine in hell, which he has refused on earth. A struggle ensues in the course of which the Conductor awakes to find himself at sixes and sevens with the pillows. At this moment his wife rushes into the room with the news that a thief has invaded the kitchen. The Conductor goes forth to capture him, but finds the thief rendered absolutely helpless by the food he had taken from the pantry. An ambulance arrives to convey both the Conductor and the thief to the hospital, where they are placed in beds side by side. Ultimately they, as well as the dog, recover. The thief is arrested, just as he is about to leave the hospital. Conductor 786 and his dog quit their respective sick beds and leave for home. They meet on the stoop, and there ensues a touching scene of reunion. Wifey is overjoyed at his return and makes him sit down at the dining table to partake of a celebration dinner. He and his dog try to make a get-away before it is too late, but are met at the door by a ponderous negress carrying savory dishes on her arms. It is the new cook Wifey has engaged during his illness.