SPOILER ALERT!
Been thinking about the plotline for the Season 3 Premiere Episode...
So based on the BtS photos and spoilers we've seen so far, I put together some overview how the storyline might go before we actually get our first Press Release. Because those always ruin the fun of speculation

Feel free to add some of your theories here as well ;-)
Opening Gambit> Outside Nigeria Village
> MacGyver and his girl enjoying some one-on-one-time
> MacDaddy showing up in his helicopter, telling MacGyver that Jack is in trouble and he needs to come back
> Mac not wanting to go with Dad, but girl saying he should go (since she all knows about Jack and how important he is for Mac and that the problems with his Dad shouldn’t influence his decision to go or not)
> Mac telling Dad he's just coming back for this single mission to save Jack, then he’s going back to Nigeria
> Mac saying goodbye to the girl, promising to come back and getting the necklace
> Mac and Dad flying away in the helicopter
insert Opening TitleCut to: Mac coming into the War Rom, saying hello to Team Phoenix (sans Jack)
> everyone hugging Mac and joking about the caveman look and asking about the necklace
> Matty briefing the Team
> MacDaddy insisting Jack is gone rogue; Mac denying it
> Matty sending Mac to shave the atrocity of a beard off since this is an official mission now
insert Mission story (not sure yet how that will go, to be honest)
> of course, turns out Jack is innocent
> something happening with MacDaddy: he gets kidnapped
> Mac has to choose between Jack and Dad; chooses Jack (or better: Dad makes the choice for him)
> Mac can't go back to Nigeria yet because he needs to save Dad; feeling guilty about choosing Jack over his own Dad
>> Mac being back with Team Phoenix for the rest of Season 3. Exactly what I NOT wanted