On sale date from Meanwhile column in this issue ("Week of...") and DC Releases #26.
This issue is a variant of Secret Origins (DC, 1986 series) #4 [Direct].
There exist further variants:
Firestorm; Crystal Frost (flashback); Wendy Olsen; Clarissa Stein (flashback); Danton Black (flashback); Brad Baxter (flashback); Eddie Earhart (flashback, cameo)
Synopsis
Prof. Martin Stein looks back on his life: his college life, his marriage and divorce, and the nuclear accident that merged himself with student Ronnie Raymond to become Firestorm.