Can a whimsical, end-of-the-world sci-fi feature about aliens from another planet attract big audiences, if, one, it isn’t directed/produced by Ridley Scott, Steven Spielberg, James Cameron, Peter Berg, J.J. Abrams, Paul Verhoeven, Luc Besson, George Lucas, M. Night Shyamalan; two, lacks mind boggling special effects; three, is short on gloom, doom and carnage; and, four, might actually be about the power of love?