[3] John Travolta returns under the curious direction of Sylvester Stallone for this sequel to the mega-hit Saturday Night Fever. But whereas Saturday Night Fever was a sincere story about a young man with big dreams and lessons to learn, Staying Alive is just a plodding procedural love-triangle that climaxes in an over-the-top music number of camp proportions. Travolta’s Tony Manero character seems to have …