Episode 1
Chapter 1 - Sagians Collide!
Sagians are aliens who live on the peaceful planet called Sariju. When their planet is destroyed by another alien race known as the Drakens, they move to Earth. One of the Sagians, named Haido, meets a human boy named Lain and his life is changed forever...
Episode 2
Chapter 2 - Bonds
Haido drags Lain outside and tells him about her home planet and the Drakens. Suddenly, she starts acting... strange. When a Drakenoid kidnaps Lain's friend Lass, will Haido revert back to normal and defeat the Drakenoid?
Episode 3
Chapter 3 - My Name is Jikiru!
Haido's other half, Jikiru, meets Lain and Lass.
Episode 4
Chapter 4 - Lass and the Mysterious Voice
Lass starts to hear strange voices in her head. What's the source of this strange voice that she's hearing?
Episode 5
Chapter 5 - Beauty and Asai
Asai tells a story to Zeras on how she met her human partner, Beauty.
Episode 6
Chapter 6 - The Beast
A Sagian destroys Yamado's ramen shop and it's up to Lain, Haido, Lass, and Rena to stop it.
Volume 1
SaGia: Volume 1
The planet Sariju is home of the Sagians, aliens who look like humans but have special powers. When their planet is destroyed by the Drakens, they move to Earth to live life there and to find a partner.
Lain's life is changed when he meets the Sagian Haido, who also has another side named Jikiru.
Now, they must find eight Claw Relics and revive the three Sagian Gods before the Drakens do and take over Sariju. During their journey, they will encounter other Sagians and evil creatures called Drakenoids.
Episode 7
Chapter 7 - The Strange Teacher
Lain and Lass has a substitute teacher, who Lain thinks is scary. Meanwhile, Haido sneaks inside Lain's school and finds something strange in the hallways.
Episode 8
Chapter 8 - The First Claw Relic
After finding a Claw Relic piece, Lain must protect it from the Drakens. Meanwhile, the Drakens find Lain with the piece and they send out their Drakenoids to attack.
Episode 9
Chapter 9 - No Escape
Lain and Haido go back to Lain's school to investigate the strange teacher that knows about Haido and the Sagians. They then find something... interesting.
Episode 10
Chapter 10 - Tough Training
After a tough battle and getting mad at Lain, Haido heads over to Lass' house. Jikiru tells Lass what happened and Rena gets an idea to train Haido so that she can get her fighting spirit back.
Episode 11
Chapter 11 - A Swarm of Drakenoids
The Drakens send a swarm of wasp-like Drakenoids, that cause people to act all crazy when they are stung by one.
Episode 12
Chapter 12 - Haido vs. Kaoruku
A Sagian named Kaoruku is possessed by a Drakenoid and causes trouble in a town.
Episode 13
Chapter 13 - Ula, the Water Archer Sagian
Lain, Lass, Haido, and Rena meet a Sagian named Ula, who wants to defeat her rival, Tentais.
Volume 2
SaGia: Volume 2
Strange activities have been happening ever since the Sagians and Drakens landed on Earth. Drakenoids appearing, Sagians causing trouble...
Lain and Haido are targeted by a mysterious man and his Sagian partner who also wants the Claw Relics. Haido herself has been acting strange as well.
Why does the man want the Claw Relics? And will he use it for evil? Will Haido ever control herself?
Episode 14
Chapter 14 - Mom or Not
Lain's mom is feeling happy... maybe too happy?