Just go into the damn portal already.
ABSOLUTELY!

Yes, you are John White, trapped in an abandoned factory in...no that isn't right.
You seem to be off the ship in some sort of factory. Doesn't look like it belongs in this time. You appear to have lost your utility helmet for now. Luckily Transbat is still with you. There appear to be signs of humans being here before. There is a big hole in the wall the size of a truck, and a note on the ground. The note appears to have been read by someone before, and something used to be taped to this letter.

The note reads as following:
" To my dear grandson,
This week was a very tragic, the factory was shut down due to the low amount
of products being shifted. Plus, everyone left after that "incident" with the processing room, but I'll let you figure what's up by yourself. If you are reading this, you have notuced that the letter is strapped to a remote, that remote controls one of our great products, code-named S.p.a.r.k. (Smart Pal Automatic Robo Kore)
This nifty gadget could get you to places you haven't been to. But be careful, that Prossesing room contains a-"
The rest of the letter is sogged out and is unable to be read.
You think to yourself. "Greatest product? Those products' popularity died out 20 years ago!"