Four dragonriders on a mission to save their world. Elian and his dawn dragon, Aurora, lead the search for the fourth and final orb. Pursued by night dragons and helped by a WWI airman, the four dragonriders are drawn into a huge aerial battle between all the dragon enclaves. The ultimate fate of dragonkind hangs by a thread. To restore order, a terrible price must be paid ...

Dragon's in Areth each have a single predestined rider and a single life mission, given to them by the Oracle. But this once all-powerful being is now fatally damaged and fading fast... Only the dragons and their riders can save it! Nolita is terrified of dragons! Learning to fly her day dragon would be dangerous enough without irrational fears to contend with and a vicious dragon-hunter on her tail. With Elian, another novice rider, Nolita seeks the first of four Orbs, whose combined power can restore the Oracle. Only Nolita, as a day dragon rider, can claim it. To do so, she must face her worst fears, and face them alone...

Dragons in Areth each have a single predestined rider and life mission, given to them by the Oracle. Kira and her dusk dragon, Longfang, must find the third orb to save the Oracle, leader of all dragonkind. Following a path beset with dangers and traps, the four dragonriders must reach the twilight world of the Castle of Shadows. Kira knows enough to be anxious. What twisted sacrifice will thisorb demand?

Dragon's in Areth each have a single predestined rider and a single life mission, given to them by the Oracle. But this once all-powerful being is now fatally damaged and fading fast... Only the dragons and their riders can save it! Pell and his night dragon Shadow must find the dark orb to help save the Oracle, leader of all dragonkind. But Segun, a power-hungry tyrant, stands in their way. Pell must use his flying skills, bravery and resourcefulness to the limit, as Segun is determined to get the orb - even if it means killing the opposition…

When the carelessness of Izzy, the guard's son, allows the Hacker to steal the Power Orb from Serentia that the villain plans to use to take over cyberspace, Jackie, Matt, and Inez are brought in from Earth to help Izzy get it back.

Sam and Callum are still stranded in the parallel world, having been pulled across by the dangerous energy of the Bermuda Triangle. Now they've found Sam's mum they are desperate to find a way home... at any cost. Meanwhile Niamh is convinced that her brother is alive and not dead as the authorities suspect, but she needs to find out what really happened to the boys before her father is convicted of their murder.

The Bermuda Trianglehas cast a shadow over Sam and Niamh Cutlers' lives since their mother vanished nine years ago. Her whereabouts remains a mystery and every year they return to the Florida Keys with their father, Matt, who is obsessed with solving the haunting puzzle. But Sam is bored with lazing around by the pool while his father hunts for the truth. Craving excitement, he and his friend, Callum, "borrow" Matt's boat. At first it's great fun, but when they find themselves marooned in a terrifying land, the boys realise they too have fallen victim to the Triangle's mysterious effects. Can they find a way home, or will they be lost forever?