Web designer Martín has retreated to his one-room apartment after being dumped by his girlfriend - along with her little terrier Susú, who now keeps him company. Martín is a phobic on the road to recovery. Little by little, he dares to break out of the isolation of his small apartment and his virtual world. Mariana is an architect, but she earns her money by decorating shop windows, in which artistic design she puts all her skills. Having just ended a long-term relationship, she now shares her apartment with mannequins and 27 unpacked moving boxes. Martín and Mariana live in opposite apartment blocks in Buenos Aires. They keep running into each other, but they don't notice each other, even though they are actually made for each other. How can they find each other in a city of three million people?