Artesia's Sorrow
Three years have passed since Casval, Artesia and Jimba fled to Earth and sought refuge in the castle of Don Teabolo Mass, an aristocrat and trusted friend of the Deikuns, in Andalusia, Spain; Teabolo adopts the children and renames them Édouard and Sayla, respectively. After Jimba is killed in an assassination attack by mercenaries hired by Kycilia Zabi, the Yashima Group, whose president is a good friend of Teabolo, offers to relocate an injured Teabolo and the children to Texas Colony at Side 5: Loum. Upon their arrival, the children meet Char Aznable, who bears a striking resemblance to Édouard. Tragedy strikes the children when they receive word that their mother Astraia has died. After Lucifer dies, Édouard bids farewell to Sayla before heading to the Loum military academy. Meanwhile, Dozle Zabi invites Ramba Ral to participate in a top secret development project that will change the face of Zeon's military forever.
Aired 31/10/2015EP 2 - Artesia's Sorrow
Mobile Suit Gundam: The Origin
The first episode, Aoi Hitomi no Casval, tells the story of Casval Rem Deikun and Artesia Som Deikun (Char and Sayla, before Char became known as the Red Comet) before the One-Year War in UC.0068.
The story for the second episode, Kanashimi no Artesia, moves three years ahead to U.C. 0071. The story will follow the tearful separation of the siblings Casval and Artesia (before they became known as Char and Sayla). It will also feature more of the development of the mobile suits, particularly on the Zeon side.
The third episode, Akatsuki no Houki, follows the youth who would become known as Char Aznable and his future comrade Garma Zabi after they join the Zeons' military academy.
(Source: Anime News Network)