TP facing turn overbet from fish

[FionnMac]

Villain was pretty much unknown but obv a fish, seemed aggro pf but passive postflop. Since i checked i have to call right?

Party Poker No-Limit Hold'em, $6 BB (6 handed) Hand History converter Courtesy of PokerZion.com

SB ($593)
BB ($600)
Hero ($791)
MP ($377.60)
CO ($586.95)
Button ($111)

Preflop: Hero is UTG with K[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Hero raises to $24</font>, MP calls $24, <font color="#666666">2 folds</font>, SB calls $21, <font color="#666666">1 fold</font>.

Flop: ($78) 5[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $55</font>, MP calls $55, SB folds.

Turn: ($188) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, MP calls $298.60 (All-In), Hero calls $298.60?