This past weekend's box office was an action-packed showdown between a drug-altered superhuman and a fearless Greek god. The drug-altered superhuman won. "Lucy" led the multiplex after it took in an impressive $44 million in its first weekend. The high-concept action flick stars Scarlett Johansson as Lucy, a party girl turned unwitting drug mule who, after an accidental chemical overdose, begins to utilize a higher percentage of her brain and gains physical and intellectual powers. The R-rated film, which co-stars Morgan Freeman and cost $40 million, trumped "Hercules," which took in $29.8 million over the weekend.