This is the story of Chakravyuha & a story of a young warrior named Abhimanyu. Chakravyuh, a circular military formation used in Mahabharata, had 7 layers comprising of highly skilled soldiers.
Abhimanyu (16 y.) tried to break Chakravyuha in the battle but could only go half way through and died.
This depicts the Chakravyuha formation, as well as the Chariot wheel which Abhimanyu used as a weapon after all his weapons were broken and he was empty-handed but didn't give up the zeal to fight.