A sensual and disarming story of a love triangle and an indecent proposal ... Sara is 25 and has recently moved to Basel to work on a doctorate in cytogenetics in a laboratory. Having recently broken up with her boyfriend, she is feeling depressed, shaken and lost. Then she meets Leo and Oscar at the laboratory, and to her surprise feels strongly attracted to both of them. Blue-eyed, fair-haired Leo is gentle and sensitive. Oscar, his best friend, is the opposite: dark-haired and brown-eyed, and direct to the point of brusqueness. They make her a proposition -- that she spend four days with them in Barcelona, going along with anything they suggest. The only condition is that no relationships are to be formed. But what happens in Spain perturbs her so much that she finds it impossible keep to their agreement.