Lance Lighton is arrested for vagrancy and taken by the sheriff to the Rogers Ranch. Dickie Rogers takes a liking to the stranger who is allowed to remain to do odd jobs and to entertain the boy. An old man who is hard of hearing mistakes Lighton for "Lightning" and the nickname sticks. Uncle Henry, heir to Dickie's share of the estate in the event of the latter's death, has been systematically cheated at cards by Bill Harvey, who now demands his money, using dire threats. Fearing a penitentiary sentence, Uncle Henry sees Dickie rolling helplessly in his wheel chair towards a cliff and does nothing to save him. Lazy Lightning saves the boy's life and the uncle covers himself by pretending to have sprained his ankle. Following the fright, the boy weakens and is close to death. The doctor thinks he can save him with serum. Uncle Henry goes in the car to get the serum. Mistrusting him, Lazy follows him to town on horseback through a driving rainstorm. A lost film.
Grace Darmond, who had made quite a splash in the 1921 (and still extant) serial The Hope Diamond Mystery, returned to the Saturday matinees as Marjorie Stanton, the treasure-hunting damsel-in-distress of A Dangerous Adventure, produced in 15 chapters and directed by two of the Warner Brothers, Sam and Jack L. Warner. Marjorie and her sister Edith (Derelys Perdue) accompany their uncle (Jack Richardson) on a treasure hunt to Darkest Africa, where the latter fiendishly attempts to sell Marjorie to Ubanga (Rex de Roselli), the local High Priest. Happily, also along for the ride is handsome MacDonald Hayden (Philo McCullough), a wild game hunter who rescues both girls from several fates worse than death.
Andrea Minghetti runs a California vineyard with the help of his pretty niece Bona, who cooks for the employees. A worker named Chico Piave, who belongs to a secret crime society, tries unsuccessfully to force himself on Bona, and later, he demands that Andrea give him both the young woman and a large sum in cash.
When a bank is on the verge of collapse, its president, George Fuller, uses his own fortune to cover its losses. Unknown to Fuller, however, Monroe Simmons, his vice-president, is undermining the bank for his own purposes. Then Tom Williams, who is in love with Fuller's daughter Ethel, asks his uncle, famous detective "Whispering Smith," to investigate the case.
Bud Harris, a young miner with a reputation for courage, goes prospecting in the desert with Tom Jones in an attempt to locate a turquoise mine. Their water gives out and their horses die on the way. Bud thinks that Tom has water in his canteen and strikes him down.
Dakota Wilson escapes from the Deer Lodge Penitentiary, and, after a period of quietness, secures a position on the Diamond S ranch, owned by Buffalo Watson. Ruth, the daughter of the ranch owner, one day sees Dakota's display of horsemanship, and the admiration thus aroused soon ripens into love, much against the protest of the family. Ruth's love for Dakota is increased by his heroic deed when he rescues her from the malignant attentions of a rushing steer whose anger is aroused by the flowing red handkerchief about her neck. Dakota, who is riding ahead of the cowboys on a round-up expedition, catches sight of the steer heading for Ruth, and, spurring his broncho into a break-neck speed, reaches the side of the steer, leaps upon its hack, and, fastening his muscular arms on the frenzied beast's horns, brings him to the ground. In the midst of the ovation given him by the cowboys, Dakota is nabbed by Sheriff Mathers, who begins to march him back to the Deer Lodge Penitentiary.
Red Reagan, and two companions, Brooks and Mathis, lose their way while on a prospecting trip in the mountains. Fortunately they come to an Indian camp where they get food and water, and So-Jun-Wah a beauteous Indian maid, shows them the trail to the settlement.
Alice Marson, an eastern young lady, becomes engaged to Glen Arnold, a young man just out of college. Girl-like, she rushes to her friend, Lucy Starr, and tells of the engagement. Lucy, who also had designs on Glen, congratulates Alice, but determines to break up the match.
Hiram Hughes, foreman on "Pop" Lynd's ranch in Bingo Gulch, has quit his job. He has had enough of "Wild Jim," who is the pest of the ranch. In despair, Pop goes to Bingo, where he places a sign on the post office, advertising for a new foreman. "Easy" Thompson, the star performer of the "Circle Bar Ranch" show, has had enough of circus life and resigns his job.