Charmian Page has developed a great affection for the child of Sir Richard. When the child is seriously hurt in a car crash that has killed his mother Lady Beverly, who was on her way to see her lover, Charmian persuades her wealthy father to pay for the operation that saves the child. Sir Richard marries Charmian for his child's sake, but remains aloof towards her for the memory of Beverly. When he learns the truth about his late wife's infidelity, he begs for Charmian's forgiveness, realizing she is the better wife.

The story has been adapted from the Sir Arthur Wing Pinero play. The title means nothing more than the mid-channel of married life, through a character in the feature likening the roughness of the English channel in the center of the trip across from London to Paris to the woes married folks meet in their wedded life.