Hmm to dumb it down alot. Basically they are having a share holder's raffle, the raffle tickets are free and they lend you some cash aswel to trade with while your funds are locked up. When you return your HEROS coin you get your BTS back.
If you withdraw your coins from the raffle before the date your raffle ticket becomes null and void.
EDIT: Also they are just showing off there great tech ^^