Lynchpin Universe: The Once and Future Twin in Bloomington, MN

Everything changes when Kyle stumbles upon his doppelgänger dying in his yard.
The boy claims to be from another world and begs Kyle to take his place. Soon after, strange occurrences from space tentacles to dragons begin to haunt Kyle's life, forcing him to confront a mind-bending reality: his ordinary existence is insignificant to the fate of a universe on the verge of destruction.
He must find the Merlin of his world before a powerful creature destroys everything and everyone he loves. Can Kyle become the person his doppelgänger was meant to be, or will the universe fall to ruin?