Fahim Mohammad, a Bangladeshi immigrant, becomes a world junior chess champion in France.
Annie lives in harmony with her husband Laurent and her children: the sensitive elders Maximilien and César; the younger Antoine whom Poupi, never-complaining teen, helps raising him. But a positive pregnancy test will disturb the harmony.
Loïc Le Tallec never really took care of his son. When the latter disappears in a road accident, Loïc is devastated. He has only one idea in mind: to find the one who lives now with the heart of his son. He falls on Hugo, a young man that this brand new heart makes totally unreasonable and uncontrollable. Their meeting promises to be explosive.
