Twin threats to time and space as campaigns by Kang and the Crown coincide! The Avengers fight the Set-serving Squadron Supreme in a clash between Earths and head for the nineteenth century to keep the West from getting wilder! Continuity questions continue as Kang and Immortus mix it up! Plus: the menace of... President Nelson Rockefeller?! Collects Avengers #141-144 and #147-149.