Miss Fay and her horse, Arabia, after doing an equestrienne high-school act, she and the horse go about as comrades on a shopping expedition. The horse follows her mistress down the street carrying a market basket. After purchasing the goods, Arabia helps the shopkeeper out by working the cash register. On the way home, Arabia observes a poor woman leave a basket on the doorstep, abandoning her baby. The horse, with philanthropic intent, leaves the market basket, and takes the one containing the waif to her mistress. There the child finds a happy home. When the house burns, Arabia rings the bell alarming the village fire department. It wakens her mistress and carries that blessed baby to safety.
—Moving Picture World synopsis