Benjamin Rousseau is a high school teacher who uses an atypical method to help his students: philosophy. In each episode he tries to help a student and explores a philosophical theme specific to each one in order to help him or her but the worst thing is that his personal life is a complete mess, divorced he tries to solve his problems too, but unfortunately does not get anywhere.

Marona, an innocent and empathetic little female dog, remembers the life she has shared with different masters, whom she has loved unconditionally.

After finding a young man's remains, Léa wakes up in the 90s and body swaps seven times as she tries to solve the mystery of his death — and prevent it.