Mjolnir has gone missing! Nobody, not even the all-seeing Lady Sif, is able to locate the powerful Uru hammer Thor has wielded in battle for centuries. So Thor must turn to the last person he wants help from: Odin. For until Mjolnir is found, nobody is safe! Because it turns out that the hammer is on a rampage across the Ten Realms, leaving only death and destruction in its path! The fatal prophecy of the God of Hammers is about to be unleashed, and Thor must act fast to save his kingdom! Is it all over for the All-Father? Not if an army of the Marvel Universe's greatest heroes can help it! Everything changes as Donny Cates continues his action-packed Asgardian saga! Plus: Legendary creators return to celebrate Thor's mighty legacy! Collecting THOR (2020) #19-24.