So Nebuchadnezzar came and besieged Jerusalem for 11 years. The king and his men tried to make a break for it, but no luck. so Nebuchadnezzar razed Jerusalem and burnt the Temple and destroyed the walls and took most of the rest of the people as slaves–except for some peasants to tend the fields and flocks. Nebuchadnezzar left this dude named Gedaliah in charge as governor, but within half a year, he was dead as were most of his officials, Hebrew and foreign. Chaos ensued and the remainder–now called Jews–fled to Egypt.
When Evil-merodach became king of Babylon, he realized old Jehoiachin, one of the last of David’s line, was still in jail, after 37 years. So he let him out, and treated the doddering 55 year old nicely and let him eat at the king’s table.
(That ends II Kings. Next is Chronicles, which mostly is just the same stories told over again, so you will see a lot of CFs and links).