This story is divided into three parts: an untitled part one (5pp), Part 2—"Trapped in Another World!" (5pp) and Part 3—"The End of Zemu!" (3pp). Zemu next appears in Fantastic Four (Marvel, 1961 series) #158 (May 1975) as "Xemu". Valeria and Phineas next appear in Fantastic Four (Marvel, 1961 series) #159 (June 1975).
Text story with illustration.
Narrated in the first person.