Michael Firch is very skilled in computers and he goes to Paris to meet very important persons to discuss a contract. Michael was born on a special astral date. On arriving in Paris, he meets Morgane and her son. Morgane is a witch, she is beautiful, she is good and she needs Michael to save her son from evil powers. Molok is a sorcerer and he opposes Morgana's plan.

At the cable car station connecting Avoriaz to Morzine, 75-year-old Barbara Herbier emerges from between the cabins, looking distraught. Cornered by her invisible attacker, Barbara falls over the railing and disappears into the void. This is only the beginning of a series of sudden and deadly incidents that will strike the Herbier family. Claire Garibaldi, a police officer in Lyon, doesn't believe much in legends when she returns to investigate the scene of her childhood.

After a car accident, a twelve years old boy had to take care of his younger sister and their dog as they are lost in the Moroccan desert.

Film-maker Jean Diaz lives with his son David after separated from his wife. On their way to the new house near the sea, Jean and David have a car accident provoked by The Death (portrayed here like a grim-reaper). The doctor actually can save Jean, but The Death sabotages the equipment with his computer. The Death offers Jean to wake David from his coma, but Jean must make an animation movie against the violence for him.

Thomas de Frémont, a precocious child obsessed with action films, sets himself up for a terrifying Christmas Eve after he unwittingly makes contact with a deranged psychopath who claims he's Santa Claus.

Over this long hot summer, Claude and Isabelle get their marriage back on track, while Bibou and Simon, spend a memorable summer discovering the world of grown-ups.