"The Planet That Time Forgot" by Donald A. Wollheim is a science fiction story that centers around the clash of civilizations and the mysteries of time on a newly found planet. It tells the tale of Oomith, the courageous ruler of Toom, who faces a brutal invasion led by the conceited Prince Aald of Nimbor; simultaneously, it follows a group of Earth explorers as they journey to this Planet P that is trapped in time. The story weaves together the struggle for survival between Toom and Nimbor with the astronauts' exploration, detailing how the Earth crew uses its advanced technology to meddle in the conflict, helping Toom while attempting to understand the planet's frozen people. Through this, the story touches on subjects of power and dignity, also diving into the profound impact that time has on society.

The Planet That Time Forgot
By Donald A. Wollheim
On a planet where time stands still, a conflict erupts, drawing in brave explorers who find themselves caught between warring kingdoms and solving a bewildering mystery.
Summary
About the AuthorDonald Allen Wollheim was an American science fiction editor, publisher, writer, and fan. As an author, he published under his own name as well as under pseudonyms, including David Grinnell, Martin Pearson, and Darrell G. Raynor. A founding member of the Futurians, he was a leading influence on science fiction development and fandom in the 20th-century United States. Ursula K. Le Guin called Wollheim "the tough, reliable editor of Ace Books, in the Late Pulpalignean Era, 1966 and '67", which is when he published her first two novels in Ace Double editions.
Donald Allen Wollheim was an American science fiction editor, publisher, writer, and fan. As an author, he published under his own name as well as under pseudonyms, including David Grinnell, Martin Pearson, and Darrell G. Raynor. A founding member of the Futurians, he was a leading influence on science fiction development and fandom in the 20th-century United States. Ursula K. Le Guin called Wollheim "the tough, reliable editor of Ace Books, in the Late Pulpalignean Era, 1966 and '67", which is when he published her first two novels in Ace Double editions.