Passion for a woman leads a mature physician to his destruction

The film narrates the encounter between "La Tigra", a woman known by that nickname in the cafes of the port area for her character and her sharp claws, and Luis, a student of Fine Arts. There will be born a strong, passionate and necessarily brief relationship during which each of them will peek into the world of the other, until then unknown, unable to overcome the hostility of the same. Luis is unwilling or unable to leave his bourgeois stability and "La Tigra" is unable to leave an environment in which the malevo Olivera is the dominant figure.

During the second half of the 19th century, a young survivor is saved in the Argentine pampas by a man she ends up marrying.

Boyhood friends grow up, form a tango orchestra, one of them writes a brilliant song commemorating their friendship before he dies.