In 1971, a young woman moves from the French countryside to Paris and begins a passionate love affair with a feminist leader.
Faced with the injustices of this world, Margot has lost all hope in the future. Giving up on politics, she decides to entrust her fate to the Dardu, a legendary carp that supposedly predicts the future. But the lake's rules have changed: fishing is now forbidden.
After completing her PHD thesis on The Unknown Soldier, Adele returns to her rural hometown to look after her grandfather. Like a modern-day Antigone, her grandfather is a rebellious writer who has secretly kept the remains of a soldier from World War I buried at the bottom of their garden.
