Paul Château Têtard, 48, falls in love with a young woman working as a counter clerk in the subway. When he plans to marry her, his mother launches a private detective on her tracks to prove she's cheating on her son.
Jonas, a 40 something Parisian, is still desperately in love with his ex-girlfriend Léa. When he knocks on her door to confess his feelings and she turns him down, he ends up at the café downstairs. Inspiration strikes and he sits down to…