During the war and fighting Grindlewald, things were chaotic, any sense of normality was flung out the window. The war against Grindlewald was becoming all consuming for those who fought against him.

Which gave Grindlewald all the advantage he needed to kidnap one Newt Scamander right under their noses. Grindlewald wants the magizoolist talents to woo powerful creatures, but he also wants Newt himself.

He know the young wizard will never be his willingly. He's too devoted to the light, uninterested in power and is already deeply in love with Percival Graves. The fact it is Graves's lover he has taken only makes it sweeter. What better way to destroy his enemy than his lover, his partner forced under a love spell to love his greatest enemy? For Grindlewald it's what you might call a win-win. For Percival and NEwt it's hell on earth.