In King Solomon's Mines Sir Henry Curtis & Captain Good persuade Allan Quatermain to help them find Sir Henry's brother George who has gone missing in the unexplored African interior while searching for the legendary treasure trove of a lost kingdom Quatermain agrees to lead the expedition though he has little hope they will return alive After suffering unimaginable hardships they find the treasure hidden deep within a mountain but while they are admiring the hoard the vast stone door closes Their store of food & water rapidly runs out & the trapped men prepare to die but in the nick of time they find a way of escape On their return trek to civilisation they succeed in the purpose of their expedition when they miraculously come upon George Curtis alive & well They return to England with enough of the treasure to live in style but Allan Quatermain lures them back for more African adventures In Allan Quatermain the trio undertake the search for the kingdom of a warlike 'white' race another expedition fraught with danger A hazardous canoe journey along an underground river leads them to Zu-Vendi a land ruled by two beautiful queens Both queens fall in love with Sir Henry & this explosive situation leads to civil war several battles many funerals & a wedding