The Overlanders, arriving at their destination, are told that their guide is busy doing the family washing. Hippy and Hindenburg, the bull pup, make a hit. Emma Dean wishes she had stayed at home. The "untamed" bronco entertains the villagers.

"Why don't yer feed the critter some soothin' syrup?" jeers a villager. Emma reads the message of the hermit thrush. On the way to the "Big Woods." Trouble is threatened at Bisbee's Corners. The Overlanders attacked by roistering lumberjacks.

"Out of this, lively!" shouts Tom Gray. The fight in the village street. Hippy and Tom rescue an unfortunate Indian from the jacks. Willy Horse follows and overtakes his rescuers. "You Big Friend—Big Medicine!" The new guide creates a sensation.

Joe Shafto lays down the law to her charges. Tom Gray admits that he is at fault. Emma announces that some of her ancestors were birds. Hippy advises the guide to eat angel food. A wild beast in the cabin of the forest woman.

"A bear! A bear under the table!" Grace Harlowe's companions thrown into panic. Nora puts her foot in a platter of venison. The guide explains that Henry, the bear, is a "watch dog." Hippy and the bear meet in hand-to-hand conflict.

"Sick 'im, Hindenburg!" gasps Hippy. The bull pup saves his master, and Henry gets a beating. Tom shows how to read the forest "blazes." The Overland Riders pitch their first camp in the great forest. Emma gets a message from the air. The lull before the storm.

Tom and Grace hearken to warning sounds in the trees. "Quick! Get the girls out!" A rush from an unknown peril. Hippy declares that "Nature is an old fogy." Crashing reverberations are heard in the forest. "Hippy's hurt!" cries Elfreda Briggs.

Tom informs his companions that their camp has been wiped out. Building a fire in the rain. Overland girls learn the secrets of the forest. Joe Shafto boxes Hippy's ears. The pet bear is welcomed with a club. A startling assertion.

"The skidway was tampered with!" Overland tents are destroyed. Tom gets a cold welcome. A warning of timber thieves. Lean-tos are built for the night's camp. "How can we go to bed with one side of the house out?" wonders Emma. Awakened by an explosion.

Hippy is assisted down the river bank by a flying tree limb. The camp of the Overlanders again suffers disaster. "Hurry! We've set the woods on fire!" Battling with a forest fire. Hippy wants to dream of food. A disturbing outlook.

Henry sleeps on high. The bear and the bull pup scent trouble. The foreman of Section Forty-three goes trouble-hunting. Settlement is demanded of the Overlanders for the burned trees. "Skip! Get out!" orders Lieutenant Wingate. Peg starts a row.

Tom Gray attacked by the lumberman. The jacks take a hand. Hippy uses a firebrand as a weapon. Overlanders badly punished. Shots from the forest shatter Peg's wooden leg. Henry paws his way into the fight. The Overlanders meet a fresh mystery.