Deserted Island in the Apocalypse: Surviving with My Former Classmate

When the apocalypse arrives, Zhan Chengfeng is accidentally swept away to a deserted island. Along the way, he encounters his adorable coworker Chen Xin and former classmate Zhang Meihua. After settling into life on the island for a while, Zhan Chengfeng sets out to explore the surrounding areas and meets a group of companions. Later, he and his teammates accidentally venture into an underground world and discover a dwarf kingdom. What kind of journey awaits them there among the dwarves?