(Stars 20 tbl SnG) JJ pre-flop with lots of action.

[KneeCo]

PokerStars No-Limit Hold'em Tourney, Big Blind is t50 (9 handed) FTR converter on zerodivide.cx

MP3 (t2555)
CO (t1175)
Button (t2390)
SB (t4480)
BB (t1400)
UTG (t4955)
UTG+1 (t4265)
Hero (t2585)
MP2 (t1775)

Preflop: Hero is MP1 with J[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img].
UTG calls t50, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t150</font>, <font color="#666666">1 fold</font>, MP3 calls t150, <font color="#666666">1 fold</font>, Button calls t150, <font color="#666666">2 folds</font>, <font color="#CC3333">UTG raises to t250</font>, Hero ???.

Mid stages of a Stars 180 person MTT, and I just got shuffled to this table, so I'm entirely in the dark in terms of reads.

What's your move and why?
If you're calling, what's your plan for the flop?
Finally, what range do you put UTG on?