Lieutenant Gil Brian and Sheriff Adam Locke, two lawmen in the late 1960s, have a problem on their hands: two people have been killed in a rural state park in the deep redwoods of California. And the only leads they have are some words scribbled by one of the victims in a hospital. The words appear to be related to an old song. Seeking help, the lawmen find a young music teacher and ask her to sing the song and play its melodies. Their hope, of course, is to uncover some sort of clue. Meanwhile, a young Dave Keller arrives from the east looking for work. A vineyard owner hires him, and he soon forms a strong bond with Lara, his employer's daughter. When Lara inexplicably disappears after visiting the home of a famous actor, Dave takes action. In the background of all this lingers a man named Darrow, who holds a mysterious blue box given to him by his grandmother, which holds special powers. Without his help, Lara has no chance of being found, and the murders will go unsolved. Join Darrow as he calls on the mysterious box to save Lara and unravel the mysteries devastating northern California.