Marvel’s First Family might not save the day after all. “The Fantastic Four: First Steps” is quickly losing steam in its second weekend, signaling the comic book adventure isn’t connecting at the box office beyond the film’s core demographic of superhero fans.

Marvel’s first family stumbled in theaters in its second weekend, but still held on to the top spot at the box office.

First Steps” held firm at the top of the U.K. and Ireland box office for a second weekend, adding £3 million ($4.1 million) and bringing its total to £15.3 million ($20.4 million), according to Comscore.