When EMT Cassie Webb (Dakota Johnson) introduces her colleague as Ben Parker (Adam Scott) as Ben Parker, your spidey sense better be tingling or this movie is going to be a slog. Not that this origin story of Marvel superhero Madame Web is just another Spider-Man variation. It’s way different. Peter Parker was bitten by a radioactive spider, and Madame Web is bitten by a natural but imaginary with magic powers spider. Got it?

Cassie (short for Cassandra, which should tingle your spidey-sense, too) is a loner. Once she delivers a patient to the hospital, She cares very much for Ben Parker and for their boss, O’Neil (the always instantly-appealing Mike Epps) but she does not want to spend much time with anyone outside of work. Cassie’s mother died in Peru, where she was researching a rare species of spider with peptides that could have healing powers for humans, and Cassie, who grew up in foster care, has always felt abandoned, even rejected, by the mother who was so reckless in exploring the wilds of South America when she was eight months pregnant.

We know there is more to the story than that. We saw her mother (Kerry Bishe), betrayed by her assistant, Ezekiel Sims (Tahar Rahim), shoot her and steal the spider she has worked so hard to find. As she dies, a member of a spider-enhanced tribe thought by most people to be a legend appears, and he is able to deliver her baby before she dies.

Cassie and Ben rescue a man from an overturned car hanging over the side of a bridge, but the car flips into the water with Cassie inside. Ben rescues her, but while under water her heart stopped, and the experience has triggered in her a power it will take a while for her to understand; she can see a few moments into the future, enough for her to make a difference and prevent disaster.

Meanwhile, Sims is having his own visions of the future, where he will be murdered by three young women with spidery superpowers. He is determined to prevent this by killing them, when they are still teenagers. He gets access to government databases and cameras and hires tech whiz and morally bankrupt Amaria (Zosia Mamet in a thankless role that consists of peering intently into screens and saying yes to Sims’ demands) to find the girls. She does get to wear elegant necklaces while she’s doing it, though.

Somehow, Cassie and the three girls, who do not know each other, end up on the same train and when Cassie sees visions of Sims killing them she gets them off the train and away from him. Keeping them away from him takes up most of the rest of the movie and unsurprisingly that means chases and explosions and at least two vehicles crashing through buildings. The girls are played by the exceptionally talented and sadly underused Isabela Merced, Sydney Sweeny, and Celeste O’Connor.

It’s not an awful movie but it is not very good. The origin story spends too much time on the origin, with Cassie getting used to her powers, which involves a detour to Peru that slows down the pacing. What we really want is more time with Cassie and the girls. If it’s going to be an origin story, let’s get their origins, too. There’s an irresponsibility and lack of even the most limited consequences to the mayhem that goes beyond the usual suspension of disbelief we grant a comic book movie. The dialogue is pedestrian, occasionally laughable, and the references to the Spider-Man universe or one of the Spider-Man universes are clumsy. And what should be the strongest part of any superhero movie, the villain, here is the weakest. Sims, who at times sounds like his dialogue has been dubbed by someone else, is just not that interesting. If you could see ahead like Madame Web, you might fix your future by waiting to see this on streaming.

Parents should know that this movie has extended comic book-style peril and violence with guns, poison, chases, crashes, fire, and explosions. Characters use some strong language and there are sexual references and situations as well as two scenes of childbirth or labor.

Family discussion: How did what Cassie learned about her mother change the way she thought about herself? What did Julia, Anya, and Mattie have in common? What superpower would you like to have?

If you like this, try: the “Spider-Man” movies and the Madame Web comics