Marguerite and Margot are  both 12, with each their own family, friends, problems… ad era! One lives in 1942 and the other in 2020. But this is without counting on a mysterious magic chest that transports them to each other’s era. Margot and Marguerite have something else in common: their father is no longer there, one vanished during World War II, the other is not living at home. With 70 years apart, they’re embarking in a wild adventure to find their present, explore History and their familie’s memories.