A genius doctor has stayed inside a sealed room in a lab for 15 years following her arrest for the murder of her parents.  Now architecture professor Souhei Saikawa, and his student, Moe Nishinosono go to her isolated island to visit her.
It's the only lonely number.
.إنه الرقم الوحيد المنعزل
Unter allen Zahlen
ist nur die 7 einsam.
Es el único número solitario.
Es el único número solitario.
C’est le plus solitaire d’entre eux.
È solitario tra tutte le cifre.
Entre os números, 
apenas o sete é um caso a parte.