Have a look at the Text Frame panel while having the picture description frame selected. In the Text Frame panel you can check the option "Ignore Text Wraps".
Just for fun - and a bit of learning - I decided to try and create a spread from a UK TV listings magazine with Publisher.
It's not totally accurate but I'm quite happy with it. It doesn't look much but there was a fair bit of fiddling around - my fault, not the software - to get it looking the way it does.
If you have a copy of the actual magazine then please have a look and feel free to pick my rendition apart if you think I've missed something important or made any big mistakes.
Some known issues:
* The colours used aren't totally accurate but I wasn't really bothered about that;
* The typefaces used aren't the real ones but I'm guessing they're bespoke for the magazine;
* The bulleted list under "Best Live Sport" isn't right as I can't figure out how to change the bullet size irrespective of text height;
* The text was mostly taken from various Lorem Ipsum generators and the rest was just me being silly, so you can ignore it.