News of the Sathar invasion has reached all the planets of the Frontier. The story always is the same; defeat and retreat. Soon, the major UPF planets will be in danger. Task Force Cassidine has been dispatched to the planet Kdikit with one goal: Stop the Sathar onslaught. Circling the planet is Fortress Kdikit, a huge and well-defended space station. Along with the ships that have been sent to reinforce it, the UPF hopes Fortress Kdikit will be the bastion that breaks the Sathar assault.