Christine's life has not been easy lately. Her lonely routine is divided between free food banks distributions and wandering the streets. On a cold winter night she founds Suli, an 8-year-old Eritrean boy, sobbing in front of her shelter. Christine understands that he is lost and has been separated from his mother. Bounded by their marginal condition, they embark together on an emotional journey to find Suli’s mother in the underground world of Paris...