SamSam, the smallest of the great heroes, has still not discovered his first superpower, while at home and at school, everyone has one! Faced with the worry of his parents and the mockery of his comrades, he goes in search of this hidden power. With the help of Mega, the new mysterious student of his school, Samsam embarks on this adventure full of cosmic monsters ...

Once upon a time, a poor woodcutter and his wife lived in a great forest. Cold, hunger, poverty, and a war raging all around them meant their lives were very hard. One day, the woodcutter's wife rescues a baby. A baby girl thrown from one of the many trains that constantly pass through the forest. This baby, this "most precious of cargoes", will transform the lives of the poor woodcutter's wife and her husband, as well as those whose paths the child will cross—including the man who threw her from the train. And some will try to protect her, whatever the cost. Their story will reveal the worst and the best in the hearts of men.

France, 1963. Since she was a child, Natacha has dreamed of freedom and adventure. Her dream has a name: air hostess. She admires the women who fly the world, with no ties, no husbands, and no cooking to do. Despite all her efforts Natacha does not match the walking fantasy that an air hostess is supposed to embody at the time. She's too... or not enough... whatever it is, she hasn't got it!

Paris, Montmartre, 1883. Seraphine, 12 years old, leaves a monotoneous life with Jeanne, the grumpy seamstress who raised her. She is obsessed with finding out who her parents were. Flanked with Mistigri, a street child whom she takes under her wing, Séraphine retraces the secret of her origins and finds it in the battles led by the people of Montmartre.