A U.S. government agent is killed on the slopes of Vail, Colorado, while investigating a rumor that someone will kidnap Carl Hansworth, a special aide to the President. Fearing that the identity of all federal agents has been compromised, the government turns to outside help- the Angels- to provide protection.

During a check of the guests at Hansworth's hotel, the Angels encounter Vincenti Donatelli and his son, Paolo, both members of an Italian Radical group called the Patriots for a Free Society. Their suspicions of the group are confirmed when Sabrina is kidnapped, and offered an exchange for the voluntary surrender of Hansworth.