During Hadrianus campaign in Jerusalem, the soldiers become sick of drinking poisoned wine and tire and hurt from the battles. Lucius try to build a hot spring to help the army get healed and he slips back again to Modern Japan where he finds himself in a healing spa where the hot stones are used to improve the circulation of the body and reduce the pain. He got sick by drinking expired sake, but this allows him to figure out the cure for his poisoned partners. The success of the project makes Hadrianus name him his personal bath builder, but Lucius asks him to go back to Rome to see his wife.