Warning: This article contains major spoilers for “Last Night in Soho.”In “Last Night in Soho,” wanderlust and cultural nostalgia drive a young woman named Eloise (Thomasin McKenzie) to attend fashion school in London’s Soho district. There, her obsession with 1960s London takes on a new dimension when she crosses paths with rising star Sandie (Anya Taylor-Joy) in her dreams.