The second season of That Time I Got Reincarnated as a Slime continues Satoru Mikami's life as a slime in the world of Jura Tempest. The story primarily focuses on Veldora's backstory through a series of journals, offering insight into his past and his connection to the Demon King, Zegnigk. Meanwhile, Satoru and his friends face new challenges as they navigate the complexities of their world.