Indestructible Hulk Annual (2013) #1

'JOURNEY INTO SCIENCE!' GUEST STARRING IRON MAN • Before BRUCE BANNER and TONY STARK became heroes, they built weapons. But who inspired them? • One of Bruce's lab assistants has unraveled a mystery from their past • Now SHIELD must send HULK and IRON MAN to retrieve one of the greatest weapon designers of all time. • Will they come back as weapons of mass destruction themselves?