The mystery surrounding her mother’s supposed death deepens as Riko learns the truth of her disturbing origins in the deadly and mysterious Abyss. More determined than ever to travel to the bottom of the Abyss, Riko and Reg leave Ozen’s Seeker Camp and delve into the treacherous Third Layer — and beyond, to depths brimming with supernatural creatures, unexpected allies and deadly enemies. The 2nd of 2 compendium films drawn from the TV series with newly added scenes and storytelling.