Private detective Harry Dobbs is hired by a mysterious woman to follow her lover, whom she suspects of infidelity. As Harry begins his surveillance, he soon discovers that the case is far more complicated than he initially thought, involving a web of deceit, multiple identities, and a range of eccentric characters. During his investigation, he encounters another woman who is involved in a similar case, and they team up to unravel the truth, though their personal attractions threaten to interfere with their professional relationship.

As they delve deeper, they find themselves entangled in a series of bizarre and comedic situations that challenge their perceptions of love and loyalty. Along the way, Harry must navigate not only the complexities of the case but also his own conflicting emotions and ethical dilemmas. The investigation leads them to examine the nature of relationships and trust, culminating in a surprising and thought-provoking resolution.