Collection and Extraction is the tenth episode of Season One.
The team stops at an isolated and seemingly insignificant Galra space station and discovers how the empire is gathering its energy from the universe.
As Pidge combs through Sendak's memories, the team discovers the location of a secret Galran transport hub. Allura decides to join the Paladins in infiltrating the station in order to extract information, despite the rest of the teams objections. When another ship arrives, Allura infiltrates the ship herself to extract its information by making use of her Altean ability to change her skin color and height, allowing her to resemble a Galran soldier. Shiro accompanies her; he is unwilling to let her go alone and she needs his hand to access Galran technology.
While waiting, the others spot one of the Druids with two large containers of yellow fluid. Keith pursues them and Coran discovers that the Galrans have found a new way to harvest Quintessence, a form of fuel that has also allowed Zarkon to live ten thousand years. Keith is discovered and battles the druid, but is injured by the druid's lightning magic only to be healed by the yellow fluid before escaping in Pidge's Green Lion.
Shiro and Allura are also discovered and flee to the escape pods, but Allura sacrifices herself to allow Shiro to escape and she is captured by the Galra.