In a faraway corner of the viking and dragon world, DreamWorks Dragons Rescue Riders: Heroes of the Sky is the next chapter following the adventures of viking twins Dak and Leyla, who were rescued and raised by dragons, growing up learning to speak their language. Along with young dragons Winger, Summer, Cutter and Burple, they defend and protect other dragons on exciting adventures around their home of Huttsgalor.[src]
When Chief Ingrid of the neighboring island Guttsgalor shows up looking for the ceremonial goblet, the Rescue Riders must find where Duggard hid it before a battle breaks out between the two islands.
After Elbone goes missing, the Rescue Riders find his boat near an island covered with unusual crystals; when they search for him inside a cave, they realize these crystals have a unique effect on the dragons' power.
Elbone's older brother Albone pays a visit to Huttsgalor; Chief Duggard lets Elbone be chief for the day; the Rescue Riders must race to clean up messes before Elbone is embarrassed in front of his brother.
The Riders set out to find the sunken city of Valantis -- an ancient Viking hub where dragons and humans coexisted -- but when they find it, they realize they aren't alone.