Made in Abyss: Wandering Twilight

A compilation film recapping the first half of the anime series. The enigmatic Abyss is an unforgiving and deadly place. Despite the dangers, it still captures the imagination of explorers such as Riko who wishes to follow in her mother’s footsteps and trains hard to become a Cave Raider. One day, she receives news that her mother died in the Abyss, yet a mysterious note tells Riko that her mother may still be alive. Vowing to uncover the truth about her mother’s fate, Riko embarks on a journey with a humanoid robot boy named Reg. Together they will discover if they have what it takes to survive where so many others have perished.

The "Abyss" is the last unexplored place in the world. Strange and wonderful creatures roam within, and it is full of precious relics that present humans can't recreate. Those that dare to explore the depths are known as "Cave Raiders." An orphan girl named Riko lives on the rim. Her dream is to become a Cave Raider like her mother and solve the mysteries of the cave system. One day, Riko starts exploring the caves and discovers a robot who resembles a human boy. Note: The last episode aired with a runtime of ~48 minutes as opposed to the standard 24 minute long episode.

Dawn of the Deep Soul continues the epic adventure of plucky Riko and Reg who are joined by their new friend Nanachi. Together they descend into the Abyss’ treacherous fifth layer, the Sea of Corpses, and encounter the mysterious Bondrewd, a legendary White Whistle whose shadow looms over Nanachi’s troubled past. Bondrewd is ingratiatingly hospitable, but the brave adventurers know things are not always as they seem in the enigmatic Abyss...

Sequel to Made in Abyss: Retsujitsu no Ougonkyou.