Mothers' Instinct

In suburban America in 1960, Alice and Céline are next-door neighbors, and both mothers to boys of a similar age. Alice stages a surprise party for Céline's birthday, during which tensions between Alice and her husband become apparent. The next day, Céline's son, Max, stays home sick from school. Alice spots Max standing precariously on a balcony, trying to hang a birdhouse he made at school, she tries to go through a shortcut passageway in the fence the kids made but she can't go in, so she runs around the house to the front gate and attempts to alert his mother, but the two are unable to act quickly enough and Max falls to his death.