Scientists try to prevent a collision between Earth and a planet that is heading for it.
| Actor | Role |
|---|---|
 Giacomo Rossi StuartCmdr. Rod Jackson | Cmdr. Rod Jackson |
 Ombretta ColliLt. Teri Sanchez | Lt. Teri Sanchez |
 Enzo FiermonteGeneral Norton | General Norton |
 Halina ZalewskaJanet Norton | Janet Norton |
 Goffredo UngerPerkinson | Perkinson |
 Pietro MartellanzaDubrowski | Dubrowski |
 John BarthaDr. Smith | Dr. Smith |
| MMarco Bogliani- | - |
 Renato Montalbano- | - |
 Franco Ressel- | - |
| MMaria Pia Conte- | - |