A sequel to the Academy Award winning film, predicting the advent of nanotechnology 40 years in the future. The new crew of Proteus, a miniaturized nuclear submarine, find themselves boldly going where no man has gone before. The US president has had a near fatal heart attack and is rushed to a secret underground facility near Bethesda naval hospital where he is placed on bypass. The last resort, insert Proteus with a team of specialists to implant cardiac stem cells in the MI site. The novel technology is stolen and used against America in an attempt to thwart his presidency completely. The ill fated mission relies on an elusive superhero with incredible shrinking abilities to save the 50th president of the USA.