A mysterious noise emanating from the ocean depths — nicknamed “the Song” — triggers a global marine catastrophe: the end of sea life as we know it. In a marine acoustics lab, a pregnant single mother-to-be tries to decipher the riddle while holding on to hope for the world her child will be born into.
Meanwhile, a US Navy officer troubleshoots an obscure bug in a sophisticated submarine AI system with secrets of its own.
