In two adjacent apartments that share a common balcony, two same-sex couples appear to live: Stefanos with Fanis in one, and Myrto with Tatiana in the other. However, things are not as they seem, as in reality, these are two married heterosexual couples: Stefanos with Myrto, and Fanis with Tatiana. They keep their marriages a secret because the women work as flight attendants for an airline that does not allow its employees to be married.

The arrival of the company director, Michel Sarantidis, who is based in Paris and secretly in love with Myrto, stirs up confusion. A small lie — that Stefanos is supposedly married to Myrto’s widowed mother, Loukia — further complicates things, leading to a series of misunderstandings.

A hijacking threat, which ultimately doesn't materialize, results in Stefanos being hired by the airline. Eventually, Michel discovers the secret but chooses not to fire the two women. In the meantime, Loukia finds love with a young painter named Angelos, and everything turns out well for everyone involved.