When eight-year-old Tetteh finds a glowing stone after a thunderstorm, he thinks it's just a cool treasure. But the stone hums like a heartbeat and flashes with light whenever he gets angry.
Soon, goats start floating, rain clouds gather over only his house, and thunder rumbles whenever he sneezes!
Tetteh discovers that the stone once belonged to Nyankonhene, the Sky God's messenger and now the skies want it back.
To save his family's farm, Tetteh must climb the highest hill before sunset and return the stone to the storm. But the journey is full of surprises.