Matthieu left home on his eighteenth birthday and hasn't seen his family since. But when his mother dies of cancer, he comes back for the funeral. His mother wanted to be laid to rest in Sardinia, in the family vault, and she'd already arranged everything before she passed away. Matthieu has to accompany his mother on her journey to her final resting place, along with eleven-year-old twins, Gavi and Lena. Matthieu is the twins' half-brother, but he's grown apart from them over the years. It won't be an easy trip, but it will also be an opportunity for building bonds, swimming in the sea and nights under the stars...