The Serpent's Lair

Goa'uld warships head toward Earth, with the aim to destroy it, Stargate command are prepared, Jack O'Neill and the SG-1 team, use the Stargate to board a ship commanded by Apophis, laying explosives to stop the attack.

They are befriended by, Bra'Tac, he knows the weaknesses of the Goa'uld ship and reveals a plan to stop them. They could all be killed, this is the only way to save Earth.