NL50: AK in reraised pot

[mithras]

What is Hero's play here? I wanted to protect my TPTK, but I don't think I can call this raise and not get it allin. No reads on villain.


PokerStars No-Limit Hold'em, $0.50 BB (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)


Hiro ($49.20)
BB ($49.60)
UTG ($73.95)
Button ($73.35)

Preflop: Hiro is SB with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Button raises to $2</font>, <font color="#CC3333">Hiro raises to $5.5</font>, <font color="#666666">1 fold</font>, Button calls $3.50.

Flop: ($11.50) 5[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hiro bets $9</font>, <font color="#CC3333">Button raises to $22</font>, Hiro ???