Overview
Webs is a 2003 science fiction-horror television film directed by David Wu and starring Richard Grieco, Colin Fox and Kate Greenhouse. Produced by the Sci-Fi Channel, it was filmed in Toronto, Ontario, Canada.
Plot
Four electricians, Dean, Junior, Ray and Shelly (nickname for Sheldon), are sent to cut off the power in a condemned building before it's torn down. They notice there's a difference between the floor plans and the actual size of the building. Upon breaking down a door they discover an old laboratory, which encloses an atomic pile (vintage nuclear reactor) powering a weird machine in the floor. They unwittingly set off an alarm and then boot up the device. Dean falls through a dimensional portal that's created and Junior goes after him, while Ray and Shelly read a journal left behind by the scientists. Dean and Junior appear outside in a deserted and web covered Chicago. Dean goes off to have a look around, while Junior waits for the others. Shelly, by reading the journal, realizes that the researchers were attempting to make a gateway to a parallel universe and he and Ray decide to step through the portal.
Finding no one on the other side of the dimensional portal, Ray and Shelly set off and get a fright when Junior leaps out. Junior leads them to a broken-down security van, with much money in the back. Junior, Ray and Shelly start celebrating, while Dean comes running back armed with a block of wood. Junior suddenly says "Guys" and steps forward with a claw in his stomach. Junior dies, and more creatures (spider people) attack the others. A group of humans save the electricians and kill the creatures. They fight more of the creatures, and head back to the portal, Dean stops to help a survivor and the portal closes leaving him trapped. On Shelly's and Ray's side, the atomic pile shorts the portal. Shelly starts trying to fix it, while Ray goes off to call for help.
From Wikipedia (CC BY-SA 4.0).