Ten strangers, drawn away from their normal lives to an isolated rock off the Devon coast. But as the mismatched group waits for the arrival of the hosts -- the improbably named Mr. and Mrs. U.N. Owen -- the weather sours and they find themselves cut off from civilization. Very soon, the guests, each struggling with their conscience, will start to die -- one by one, according to the rules of the nursery rhyme 'Ten Little Soldier Boys' -- a rhyme that hangs in every room of the house and ends with the most terrifying words of all: '... and then there were none.

10 men and women are called to Natural Island Hotel on the isolated island Heitaijima off Yachijojima by the owner Nanao Shin. They take the dinner that has been prepared while filled with a mix of expectation and anxiety about what is going to happen and why they have been invited to this island. Then they suddenly start to hear a mysterious voice reveal their past crimes. As the 10 of them go through past incidents in their mind, one of the invited guests is murdered before their eyes. That seems to be the catalyst for the murder of another guest and then yet another. Several days after the invited guests came to Heitaijima, police head over to the island following the report of murders. They discover 10 murdered bodies on this big “locked room”. Who is the murderer and why did these 10 people have to be gathered and killed? ~ Based on the novel "And Then There Were None" by Agatha Christie, published in 1943.

Shinichi Todo is handsome and smart. He is loved by family, friends and his girlfriend. Everything in his life seems to go well, but, one day, someone with the same name is arrested. After that, his smooth life changes. An imposter takes his life.