Twelve-year-old Peter Michaels is accustomed to weird things happening with regularity, but when an old man dressed in strange clothes falls from the sky into Peter's front yard, the weird quotient, as his dad would put it, gets ratcheted way up. Peter does the only thing he can. He helps the man into his house. That mistake leads to a second, the one that puts an end to Peter's dream of making the all-star baseball team. As Peter soon discovers, comforting a dying wizard puts your mark on an unbreakable pact - one that will ensnare him and his friends, Raven Dakota and Stumpy Simpkins, in a fight for their lives.