Countdown

Dolim forces the captured Hoshi Sato to break the Aquatic launch code, using neural parasites to overcome her resistance. Archer persuades the Aquatics to join his alliance, while T'Pol's data from the sphere suggests that destroying one key sphere could bring down the whole network. The Sphere-Builders help Dolim by creating an anomaly that destroys allied Xindi ships. Hoshi breaks the code, and the Insectoid councillor, growing suspicious, is killed when Dolim destroys his ship. Major Hayes leads a MACO team to rescue Hoshi from the Reptilian vessel, but is fatally shot during the escape. The weapon slips into a subspace vortex bound for Earth. Archer, Reed, Hoshi and the MACOs set off in pursuit aboard Degra's faster ship, while T'Pol takes Enterprise to destroy the sphere network.