22$ KT hand

Seat 1: nic 18 ($1,305 in chips)
Seat 2: Buzzball x ($1,155 in chips)
Seat 3: kpeddie2010 ($2,405 in chips)
Seat 4: raindave ($1,315 in chips)
Seat 5: Daf12 ($1,965 in chips)
Seat 7: birdman1513 ($2,535 in chips)
<font color="red">Seat 8: Hero [KD,10S] ($1,455 in chips)</font>
Seat 9: PeekReus ($2,220 in chips)
Seat 10: AfroFunk1 ($645 in chips)
ANTES/BLINDS
nic 18 posts blind ($50), Buzzball x posts blind ($100).

PRE-FLOP
kpeddie2010 folds, raindave calls $100, Daf12 folds, birdman1513 folds, <font color="red">Hero calls $100</font>, PeekReus folds, AfroFunk1 folds, nic 18 calls $50, Buzzball x checks.

FLOP [board cards 4S,KH,2S ]
nic 18 checks, Buzzball x checks, raindave checks, <font color="red">Hero bets $400</font>, nic 18 folds, Buzzball x folds, raindave bets $1,215 and is all-in, <font color="red">Hero ...</font>

i havent seen villian to make this move before.
maybe he thoughts i am on a steal and wanted to resteal but i have no reads to determine that.
fold preflop is the best here?
do you call or fold on this flop?