Actual scan of comic and not a stock photo.
While carrying out a mission for the All-Star Squadron, TNT and Dyna-Mite are ambushed by members of Axis America. During the battle, TNT is killed. Dyna-Mite, who barely survives, is aided by Arn Munro, a young man who possesses superhuman physical abilities. Iron Munro, Fury (Helena Kosmatos), Flying Fox, and Dan help fend off an Axis America attack on Squadron headquarters. The four young heroes meet up with Neptune Perkins and Tsunami while heading out to the West Coast to track down Axis America. Later on they meet and recruit the Tigress.
After routing the forces of Axis America, the five young heroes are invited to join the All-Star Squadron on a probationary basis. They fight foreign and local Axis threats. They also meet an older group of metahumans collected by the Allied countries known as The Young Allies whose members come from Russia, China, France, and England. The Young All-Stars are disbanded after being absorbed into the All-Star Squadron.