ENT Season 4 Episode 21 Terra Prime

Plot

Commanders T'Pol and Tucker remain captives of Paxton, who continues to broadcast his demand on all channels and frequencies. Paxton's action has an unsettling effect on the interspecies conference since it is clear that not all humans support it. On Mars, Paxton allows T'Pol and Tucker to see the baby, and T'Pol uses her scanner to learn that the child is unwell (and that Paxton has been using Rigelian gene therapy to treat himself). Seeking to fine-tune their attack, Paxton then threatens T'Pol in order to force Tucker to optimize the targeting system of the array.
Enterprise is then ordered to Mars to destroy the array, but is turned away when a warning shot from the weapon damages the ship. Gannet Brooks, now in the brig, reveals to Ensign Mayweather she is a Starfleet Intelligence operative, and that Terra Prime probably has an operative aboard. Under the urging of Minister Samuels, the crew of Enterprise conceive a way to approach the deadly station undetected, using a shuttlepod hidden inside the tail of a comet. Captain Archer elects to lead the away mission, along with Lieutenant Reed, Doctor Phlox, and Mayweather.
En route, the shuttle's systems suddenly fail, nearly causing it to crash. Landing on Mars, the team then infiltrate Paxton's ship. Teaming up with Tucker, who has escaped his cell, they battle the Terra Prime followers in the control room. During the shootout, Paxton manages to lock the firing sequence — fortunately, Tucker has altered the targeting, and the beam misses. With Paxton under arrest, the hybrid child, named Elizabeth after Tucker's sister, is brought to Phlox, who unfortunately cannot do anything to save her. Investigations also reveal that Ensign Masaro was the spy, and he dies by his own hand. Back at Starfleet, Archer makes an impassioned speech to convince the delegates to explore the universe's mysteries together.