Low-Frequency Listener (L-FL): The issue begins with a scene of Mark (the alter-ego of the superhero Invincible), William and Rick (college buddies) walking and talking after an evening of bowling. Rick, having a rough time adapting to his new cyborg body, leaves his friend stranded in the parking lot.
Invincible #48 (I#48): A scene shift moves readers to the jailed supervillain Doc Seismic ranting about a comeback equivalent to the Rolling Stones embarking on a Milky Way spanning rock and roll tour.
L-FL: Another scene shift shows the superheroes of the Image universe getting attacked in their headquarters. Cecil summons Invincible and Atom-Eve from Africa to dig three miles beneath the surface. There they find every hero in the Invincible universe trapped in bubbles by Doc Seismic. Invincible and Atom-Eve are defeated by Doc Seismic and the monsters under his control defeat Invincible and Atom-Eve.
I#48: So, is there a superhero definition upon my pages?
L_FL: By taking Doc Seismic’s attacks from underground as metaphorical, superheroes, despite individual strengths, remain particularly vulnerable to attacks from below.
I#48: I win!