Callum has not had much luck in his life the last couple of years, at least until an opportunity to change things comes his way. He doesn't hesitate to take the offer and finds himself in Equestria.
He wants to get things started the right way, and enjoy himself.
Twilight has a little experiment going to test if love is real or not and ends up making a love potion that only affects those who fall asleep after ingesting it.
Twilight and Callum experience the effects of the potion.