Serge Pilardosse has just turned 60. He has worked since the age of 16, never unemployed, never sick. But the hour of retirement has come, and it is disillusionment: he is missing points, some employers having forgotten to declare it! Pushed by Catherine, his wife, he gets on his old motorcycle from the 70s, a "Mammut" which earned him his nickname, and sets off in search of his pay slips. During his journey, he rediscovers his past and his quest for administrative documents soon becomes incidental..