A drifter nicknamed "Driftin' Sands" is hired by a wealthy rancher to protect his spoiled daughter. Driftin', of course, falls for the lady and is immediately banished from the ranch.

In San Juan, Puerto Rico, The Drifter, young and educated, and The Seeker, old and feeble-minded, meet and form a partnership. The Seeker meets Rosario, unaware that she is his daughter, left there 20 years previously when his mind was affected by a tropical storm that killed his wife and wrecked his home. Rosario is deeded land belonging to her father and is about to sell it to Clifford Fayne when The Seeker discovers gold there and urges her to desist. Fayne lures her to a cabin and tries to force her to sign the bill of sale; The Drifter and her father rescue her; the father is mortally wounded but lives long enough to learn that Rosario is his daughter and that she will be happy with The Drifter.

Tammany Burke, young owner of a giant roller coaster, is fighting heavy odds against a syndicate led by financial baron Hughey Cooper. Assisted by his sweetheart, Joan, and her father, Jingles Wellman, formerly a clown, Burke prepares for a sabotage of his machine by syndicate hirelings. In the midst of a great battle the riot squad arrives to arrest the troublemakers, and Burke and his sweetheart are left in happy possession of their roller coaster.

Gangster Jim Boyd serves a 15-year prison term when Hardy, a rival crook, doublecrosses him. On his release from prison, Boyd seeks out Hardy in Chicago, where he runs a cafe and bootleg operation. He makes the acquaintance of Mona Gale, a dancer in Hardy's cafe who is engaged to marry Jack Waring, the orchestra leader. Unaware that Mona is his daughter, Boyd shoots Hardy in a brawl and leaves behind evidence implicating Waring as the murderer. After Hardy's death, Mona joins Boyd's gang to gather evidence proving her fiancé's innocence. The gang members discover that Mona has dealings with the police, and they begin to torture her. Having learned of Mona's relationship to him at the last minute, Boyd arrives at the gang's hideout in time to save her. He confesses to killing Hardy before he dies from a wound inflicted by one of his own gang, thus freeing Waring to marry Mona.

London businessman Sir Philip Bradley, travels to Canada to survey some mining properties but learns that another concern has already commissioned James Caldwell, a young engineer, to survey the land. Sir Philip hires Marie Burguet, a beautiful woman who married gambler Frank Farnsworth in order to escape a humdrum existence with her father in the mountains, to obtain the surveys from James.

The Singapore Mutiny is a 1928 American silent drama film directed by Ralph Ince.