Allan and the Ice-Gods is a fantasy adventure novel featuring Allan Quatermain, a professional big game hunter and occasional trader. The story details Quatermain's past life regression to a Stone Age ancestor and the various adventures involved. Allan Quatermain, feeling awkward toward Lady Luna Ragnall after their recent taduki-induced vision, in which they were nearly married, refuses three invitations from Lady Ragnall to return for another vision and has vowed never to use the drug again. Lady Ragnall herself informs Allan that she has used the taduki once more and discovered that their ancient counterparts, Amada and Shabaka, were indeed married. Few weeks later Allan has a psychic experience and later learns that Lady Ragnall had died of heart failure in the Temple of Isis. Allan inherits her estate and distributes it to charities except for a box containing the taduki drug which Lady Ragnall had left him. Captain John Good shows up and persuades Allan to use the drug and the two enter into their vision.