Uma continuação da aventura épica do valente Riko e Reg, que se juntam a seu novo amigo Nanachi. Juntos, eles descem para a quinta camada traiçoeira do Abismo, o Mar dos Cadáveres, e encontram o misterioso Bondrewd, um lendário Apito Branco cuja sombra paira sobre o passado conturbado de Nanachi. Bondrewd é incrivelmente hospitaleiro, mas os bravos aventureiros sabem que as coisas nem sempre são como parecem no enigmático Abismo.
Após Noboru (Saitoh Takumi) salvar Hayase (Ryunosuke Kawai) de um afogamento dando-lhe respiração boca-a-boca, o pobre Hayase fica confuso sobre seus sentimentos. Ao mesmo tempo envolve-se com Ryu, irmão gêmeo de Noboru. Mas Ryu tem uma personalidade muito diferente do irmão.
Por quem Hayase realmente se apaixonou?!
The Metropolitan Police Department '0'section, known as an organization in the police department that investigates a closed case. Well-trained detective in the '0' section, Ray, is looking for her memory that was lost during the training, while also investigating a human traffic which young woman being a victim. One day, classified killer virus was seized by rising terrorists. To investigate this case, public safety sent Sarah Kodama who specializes in molecular biology and computer, to work with Ray but Ray refuses to work with Sarah. Sarah was curious about mysterious Ray, she starts to collect Ray's information and goes to see Ray's former boss, Asami. However, the man who appeared in front of Sarah was an assassinator who contemplates destruction of '0' section. What happens to Sarah...!? What is in Ray's lost memories!?
Bonobono: Kumomo no Ki no Koto was the second theatrical Bonobono movie, released by Amuse Pictures in theaters in Japan on August 10, 2002. It was done completely in 3D.
