Suspense / Fantasia / Ficção Científica
See A Desconhecida by Arthur Harari at Cinema Trindade, a suspense/fantasy/science-fiction film. David Zimmerman, nearly 40, is a photographer but nobody knows it; at a party he follows a woman and wakes in her body.

Image: from the event entry at Agenda Porto.
Source: Agenda Porto (Câmara Municipal do Porto). Details can change; the original entry is the reference.