An Argentine woman invents a fake marriage to fend off a persistent, wealthy suitor, but when her make-believe husband runs off with her money, she recruits a new man to keep up the ruse — and the two gradually fall for each other for real. Musical comedy starring rumbera María Antonieta Pons and Abel Salazar, adapted from a novel by Luisa-María Linares and named for a popular cha-cha-cha song of the era.