Concerns arise when a meteor shower is projected to hit the decommissioned Shadow Alpha One moon base, and attempts at contacting the lone crew member, Captain Lee Taylor, are unsuccessful. Scott and Alan take Thunderbird 3 on a rescue mission and Scott boards the base and finds Taylor attempting to maintain the base and it's defence system against meteors. After initial attempts to defend the base, against continuing waves of meteors, Scott and Taylor are forced to abandon the base to meet Thunderbird 3 at a rendezvous on the moon's surface that itself is threatened by the meteor shower. Guest Star: Rich Hall as Captain Lee Taylor.