A well-grown boy sees a box of his father's cigars, and pockets one. He goes downstairs, and no sooner is he out of the building when he joyously sticks the cheroot into his mouth. Feeling like a man, he goes to a nearby café, orders a drink, and then lights the weed. A close range view of his face is now given. He is flirting with a girl sitting near him. In a little while the cigar begins to act, and between the smiles towards the damsel there is interspersed a sickly expression. The sick feeling gains, but the young man keeps on smoking until he feels very ill; still unwilling to admit defeat. he loosens his collar and coat in an endeavor to be comfortable, but the waiter finally sees him and starts him home. Very ill and groggy, he finds the keyhole after much groping, and enters the wrong room. Here an indignant lodger seizes him and fires him downstairs. This seems to revive him somewhat, and the poor, sick boy makes his way to his own home where his fond mother is seen administering to the would-be man.