The attacks of the huge lobo Gray Cloud have caused a price of $2,500 to be put on his head. It falls to big Dave Reagan, considered little better than a half-wit in that part of the range, to find the monster held fast in two of his traps. Something in the fearless animal's eyes keeps young Dave from killing the wolf. Instead he releases Gray Cloud and escapes with him into the wilderness, and it is there that the two become indelibly attached.