Five gigantic sinkholes have recently been discovered on a remote plateau on the other side of the world. A team of experts has made the trip to descend into the depths. Among them is professor Georges Lebrun, who has come with his wife.
| Actor | Role |
|---|---|
 Nathalie BoutefeuFrance | France |
 Mathieu AmalricGeorges | Georges |
 Vincent Launay-FranceschiniNot listed | Not listed |
 Antoine BarraudMaurice | Maurice |
| MMario DragunskyNot listed | Not listed |
| MMarta HoskinsPearl | Pearl |
 Benoît JoubertNot listed | Not listed |
| MMatthieu BlanchardNot listed | Not listed |
| MMoïra DouguetNot listed | Not listed |
| CClaire BurnoudNot listed | Not listed |