Scientist André Ségonne hits the headlines with his discovery of anti-matter. On his way to a few days' vacation, he is involved in a motorcycle accident. Rescued by Piort and Florence, a strange couple, André is taken to their equally peculiar house: an inexplicable power seems to emanate from...
Taking advantage of their uncle's absence, André and Raymond Rafet organize a New Year's Eve party at his house. The uncle returns unexpectedly, disturbs the party, threatens his nephews to disinherit them and then locks himself in his office. A few minutes later, he is found dead, poisoned.
