When Willow sustains an injury, Ellabeth finds herself thrust into the position of Head Rider, tasked with guiding the Unicorn Riders through their upcoming quest. Their mission? To venture into the shadowy realms and retrieve the coveted diamond scales of the Dakkar Serpent. Yet, the path ahead is fraught with perilous obstacles lurking in the shadows. Will Ellabeth summon the bravery and resilience needed to navigate the treacherous journey, ensuring the safety of her fellow Riders as they strive to fulfill their mission?