Harry Clark is in love with Mina West, the sister of Mrs. Gyblin. Mr. Gyblin is a prominent clubman, and seeks his amusement outside his home. One evening Harry calls with four theater tickets, and invites Mina, her sister, and Mrs. Gyblin to a theater. Mr. Gyblin gruffly refuses, and goes off to his club. Mina is in a quandary, for her sister really wishes to go, although she is feeling very indisposed and has been ill for some time. Later Dr. Diven, the family physician, calls, and the young people, seeing a chance to fill out their party, prevail upon him to accompany them and Mrs. Gyblin to the theater. One of the Gyblin's club friends happens to attend the same performance, and sees Mrs. Gyblin and the doctor in the front seats of a box, without knowing that they are accompanied by the young people. Being a scandalmonger, he leaves the theater and goes to the club, where he jokes about what he has seen. Finally Gyblin is led to suspect that his wife is unfaithful. Later, in the presence of his wife, he threatens to "get" the doctor, and rushes out of the house. Mrs. Gyblin, ill as she is, decides to go to the doctor's house and warn him. She arrives there shortly before her husband, and is immediately taken very ill from her exertion. The doctor puts her to bed and cares for her. Gyblin arrives, and breaks into the doctor's house in a fury. He is about to attack the doctor, when he learns that his wife has become a mother. The young people arrive in time to give a full explanation, and a reconciliation follows between Gyblin and his wife and the doctor.
—Moving Picture World synopsis