The Blue Flame Wall

Caught in Earth's gravity, occupants of an orphan planet build a bridge of space debris to the blue marble planet. The final two miles are made of indigenous Earth metals. After millennium of caring for their adopted planet. one of the four surviving Guardians conjures a Blue Flame Wall across the bridge, trapping the other three and all the Pyxies gathered for the Solstice celebration. Once trapped, the earth starts to deteriorate, with severe weather changes, melting icebergs and more.
The daunting task of breaking the spell rests on the shoulders of eight half-lings. Half Guardian. half human.