On a warm summer afternoon, adolescents Laure and Vincent set out into a small, isolated wood not far from the village to have a quiet picnic just for the two of them. However, their plans for a romantic getaway are disrupted when Laure's younger sister, Sarah, stubbornly manages to tag along. As the oppressive afternoon heat sets in and their minds become increasingly fuddled by the wine, the atmosphere shifts, eventually leading the two teenagers to awkwardly express their hidden fondness for one another in a tender coming-of-age moment. Sarah—whom both of them had completely forgotten about—witnesses the scene.