S1E1 - ENCOUNTER
Arrival of the military students and passengers on Aries Station. Commencement of their training.
April 1, 2006, midnight
S1E2 - CONTACT
Shuhei, Aki and Aya arrive. Ryota buys time for Sayaka during a training simulation for her to find Aya and tell that she will not be able to see each other.
April 8, 2006, midnight
S1E3 - OUTBREAK
Warning klaxons signal an emergency. Terrorists begin their attack while the crew and passengers attempt to evacuate.
April 15, 2006, midnight
S1E4 - BREATHING SPACE
Some are stranded on the station. Shuhei and Cellaria are injured in battle. Flashback to Nao's childhood.
April 22, 2006, midnight
S1E5 - WATERSHED
Flashback to Aki's childhood. The military students prepare for a counter-assault on the terrorists.
April 29, 2006, midnight
S1E6 - FAREWELL
Cellaria is captured. Shuhei attempts a rescue.
May 6, 2006, midnight
S1E7 - FLUX
Discovery of a strange virus. Cooperation occurs all over the station for survival. Nao is injured in an attack.
May 13, 2006, midnight
S1E8 - DESIRE
Nanami is found. The terrorists are double-crossed. Flashback to Yu's childhood.
May 20, 2006, midnight
S1E9 - ROUSE
Shuhei is being corrupted. Yu is captured but escapes with the help of her childhood friend.
May 27, 2006, midnight
S1E10 - STRAY
Cellaris's past is revealed. The military students make plans to leave the station.
June 3, 2006, midnight
S1E11 - MOURNING
Aya manages to escape at the cost of Gale's life who ensures her safety.
June 17, 2006, midnight
S1E12 - JOURNEY
With the station starting to burn up in the atmosphere of Earth, the rest of the crew commenced the evacuation of the station. The event shifted forward for 1 year, where everyone returned to their normal lives. Most characters' futures were revealed as well.
June 24, 2006, midnight