A journey into the heart of a 13-year-old girl diagnosed with leukemia. Far from being overwhelmed, she discovers rather an impressive force of character that helps her fight her illness.

A road trip through rural Québec unites Mathilde and a teen searching for his mother, leading to friendship and blurred lines between past and present.

Isolated in a country house, Simon questions his mother’s authority and resists bounderies. His behaviour influences his younger brother Colin, a sensible boy who is desperately seeking for a male role model. Colin will develop a perilous plan to try to stop Simon from running away.