Morgane is 38-years old, has three children, two exes and an IQ of 160; her destiny as a cleaner is turned upside-down when her extraordinary abilities are spotted by the police who offer her a job as a consultant.
On the day of their grandmother's funeral, Sacha gathers his cousins to write a tribute to her but nothing will happen as planned.
Capucine, her sick mother and Eugénie hit the road to try to escape the radioactive cloud that is heading straight for their little town.