When his boy soprano voice begins to change, Piemur is drafted by Masterharper Robinton to help with political work and is sent on missions that lead him into unusual and sometimes dangerous adventures.

Tired of his boring life, Lord Jaxom decides to secretly train his extraordinary dragon to take part in the desperate battles of dragons and their riders against the Threadfall that periodically threatens their planet.

The alien Catteni invaded Earth and enslaved thousands of humans on the planet Botany, where they struggle to survive while colonizing the world for their overseers. Now that they’ve proved Botany is capable of sustaining life, Kris Bjornsen and her fellow settlers have no intention of surrendering the home they’ve created for themselves…Armed with the knowledge that the true enemy behind the Catteni is the Eosi race, Kris has begun a campaign...

Apprentice dragon rider Kindan, along with Nonala and Kelsa, tries to stop the spread of a deadly contagion and win the approval Lord Bemin, the father of his true love, Koriana.

"When Killashandra Ree first joined the mysterious Heptite Guild to become a crystal singer, she knew that she would be forever tied to the planet Ballybran. She could leave but she would always have to come back, drawn like a magnet by the song of crystal that pulsed through her veins. Crystal singing brought ecstasy and pain, near-eternal life and an increasing loss of memory that bit by bit would erase the parts of that long, long life that lay...

The involuntary settlers of the world Botany, having successfully defeated the alien Catteni, find themselves facing new decisions as they establish contact with a weakened Earth.

Aramina is a teenage girl of Pern, who hears dragons -- a skill which does not solve any of her family's problems. Her mother fears losing her daughter to the life of a dragonrider. But Aramina exploits her rare abilities without deserting her beloved family.

Acorna, the Unicorn Girl, sets out on a quest with one of her adoptive "uncles" to learn the truth about her origins, while at the same time the Linyaari, a gentle, telepathic race, embark on a journey throughout the galaxy to spread the alarm about a coming invasion and to search for a beloved infant lost long ago.

All seems well on Pern until a mysterious ailment strikes, killing myriads of holders, craftsmen, and dragonriders. Pern is left in mortal danger with no one to rise to char the parasitic Thread.

Five women, each with their own unique talents and abilities, band together to save mankind.