A little boy waits to meet his best friend to celebrate Halloween. When she at least appears, boy's mother makes a photo in her tablet and both walk house by house looking for trick-or-treat. Meanwhile he obtains several candies, she obtains no one, and he shares his candies with her, as well as both did the previous year. But when both come back to his home, he jokes with a man thinking that he's a fake doctor, taking a diagnosis paper from his hands, making that his mother runs behind her son. When accidentally the boy reads the diagnosis, he surprises with the words "Imaginary friend". Although the doctor and his parents says that she friend isn't true (showing him the photo of the tablet, where he's alone, instead with her at side of him), he claims her for real. After boy and girl run away returning to the hill, parents and police looking for the boy, making a macabre and unexpected discovery. Written by Chocky
九岁男孩奥斯卡·史埃尔(托马斯·豪恩 Thomas Horn饰)的父亲(汤姆·汉克斯 Tom Hanks饰)在911事故中丧生,在他幼小的内心中留下了阴影。无意间奥斯卡发现了一封写着“布莱克”的信封和一把钥匙。奥斯卡认为这是父亲给他留下的寻找线索,钥匙背后一定隐藏着什么 秘密。奥斯卡把这一秘密告诉了不会说话的老爷爷(马克斯·冯·西多 Max von Sydow饰)。此后的每个周末,奥斯卡开始在五个城区里寻找姓“布莱克”的人。父亲生前跟奥斯卡一起规划了寻找第六城区的“侦查探险”游戏,告诉奥斯卡:不要停止寻找。
本片根据作家乔纳森·萨佛兰·福尔的小说改编。