Lucia, a refined architect, decides to go on a short vacation with her new couple to Uruguay. They’ll be back to spend new year at home. Ana, one of Lucía’s best friends, a single, young actress, is left in charge of both, the big house on the suburbs of Buenos Aires and Abigail, the 12 year old daughter Lucía had with Bruno, her ex husband. Ricki arrives early to pick up his daughter. There he finds Ana, whom he hasn’t seen for almost two years. During a casual and unexpected encounter, Ana and Ricki discover they like each other. Or reconfirm that they have always liked each other. We are not certain. Today they are both single and available, at the house of one’s friend and the other’s ex wife. The pool’s pump is broken that morning, and Ana fears the water will go bad. Or maybe it will all go bad. Ana and Ricki start an intense romance until the day Lucía returns. Guilt, lies and fear of loosing her friend, stall Ana’s decision of telling Lucía all that’s going on. For how long should a friend’s ex be untouchable? When does it end?