Bottom set facing a 4-bet vs Donk

[ajmargarine]

Villian in this hand is bad preflop. Chases postflop.

.50/$1 NLHE 4-handed

Hero has $115, Villian covers.

Preflop: Hero is BB with 4 [img]/images/graemlins/heart.gif[/img] 4 [img]/images/graemlins/club.gif[/img]. Villian posts a blind of $0.50
1 fold, Button calls $1, Villian calls $0.50, Hero checks.

Flop: ($3) K [img]/images/graemlins/club.gif[/img] T [img]/images/graemlins/spade.gif[/img] 4 [img]/images/graemlins/diamond.gif[/img] <font color="blue"> (3 players) </font>
Villian checks, Hero bets $2, Button folds, Villian raises to $4, Hero raises to $14, Villian raises to $28, Hero ???

In hindsight, he's not doing this with QJ. I think he **might** do this with Kx, KT, K4, T4. I **think** he raises AA/KK preflop. Which leaves us with TT. Do I just call him here and call him down? He has done dumb things postflop, but they have all been overbets into small pots, nothing like this before. Comments welcome.