A couple walks on the Chaban-Delmas bridge, in Bordeaux. He is a renowned neurologist, and his wife is a stay-at-home mother. But the doctor does not seem in his normal state that day. Suddenly, he affirms that he is going to fly away and rushes into the void, under the eyes of his horrified wife. Dementia crisis? suicide? An autopsy is requested to elucidate this mystery.