also portal doesnt have much of a story other than youre a test subject in aperture science
Aperture Science started in like the 1960s with Cave Johnson, a shower curtain salesmen, buying seep salt caverns to begin a company centralizing around a device he conceptualized. Using his vast fortune, he engined tests with his scientists and partner, Caroline. As the years went on, he was still testing the device for perfection instead of releasing it, and funds dwindled. He became ill when he came in contact with his Conversion Gel and died soon after, prompting the scientists to put Caroline into the main computers, now named GLaDOS and with her memories subdued.
And that's just a short summery of the beforehand. You need to pay attention, dude.