Arachana

In the second audiobook of the Chronicles of Malick Series, Malick and his crew investigate mysterious 'domes' that enable instant travel across Sworld, leading them to an abandoned civilization maintained by robotic sentinels. As they uncover clues about the vanished society, they face unforeseen dangers when Malick disappears and the robots turn hostile. The crew's quest to find answers and possibly find their way home takes them deep into a bio-mechanical city with secrets that could threaten them all.