For over 40 years Maria Nieves and Juan Carlos Copes were a celebrated Argentine dance team, popularizing their distinctive brand of tango through tours of Europe, Japan, and the U.S.; their long-running Broadway show Tango Argentino was nominated for three Tony awards. This documentary about their tempestuous partnership on and off the stage includes archival footage and contemporary interviews, but its strongest moments are the dramatic reenactments: inventively choreographed and erotically charged dance sequences shot by Jo Heim and Félix Monti. Ayelén Álvarez Miño and Juan Malizia are enticing as the young Nieves and Copes; director German Kral makes smart use of them out of character as well, inserting sections in which dancers and choreographers get the real-life Nieves to reminisce. In Spanish with subtitles.