The planet Mongo: As planet Earth is besieged by attacks from space, Flash, Dale and Dr. Zarkov travel to the planet Mongo to confront Ming the Merciless. -- Into the water world of Mongo: Flash, Dale and Dr. Zarkov battle the Fire People, encounter the underwater denizens of Mongo, and reunite with Prince Barin and Aura, fellow rebels against Ming the Merciless. -- Escapes to Arboria: In order to avert a war between Ming and the kingdom of Arboria, Flash leaves his friends behind and disappears into the jungle. But war is declared and Flash single handedly succeeds in wreaking havoc amongst the invading foes.

Volume 3 has author statement: Alex Raymond ; publisher, Woody Gelman ; editor, David Kaler.

v. 1. The planet Mongo -- v. 2. Into the water world of Mongo -- v. 3. Escapes to Arboria.