Set during the movie.
"Jack Frost?!" Bunnymund's voice could be heard all the way in the toy shop but he could really care less. "Jack Frost doesn't care about children. All he does is freeze water pipes and mess with my egg hunts," he yelled, even as Tooth and Sandy exchanged amused glances and North refused to look away from the hologram over the crystal. "He nothing but a lazy, selfish-"
"Guardian," North interrupted, a smile hiding within his beard.
Buuny was really not happy about this. Of all people, it just had to be the one person he would rather bury in his warren and never let out. Ever. "Jack Frost is many things." Like annoying, and irritating, and selfish, and… "But he is not a Guardian. I mean, I bet he off somewhere freezing someone's tongue to the roof of their mouth or whatever."
North waved his massive hand, irritation and contemplation coming over his face. "No, he is very powerful spirit. He can help us to defeat Pitch."
"Then what, we invite him to the club? Come on, North. He's been nothing but trouble. I've worked hard to try to convince him to leave me alone. And what, you want me to invite him for tea and cookies?" Bunny laughed humorlessly. "How are we even going to catch him?"
"Catch him?" Tooth fluttered into the conversation, the feathers on her head puffed in her stress. "Why would we have to catch him?"
"He's a nature spirit, Tooth, he goes where the wind takes him. Except in his case, we mean that literally."
"I know that," she defended against his condescending tone. "But why would we have to catch him? What is he, a bird? No, we talk to him like civilized people should."
Bunny laughed again. "Ha, no." He walked past her, over to the crystal to glare at it. "He's flightier than one of your hummingbirds. Besides, the last time I tried to get anywhere near him this close to Easter, he froze my feet to the floor and ran off."
Sandy laughed silently at that one, remembering the occasion vividly seeing as he was the one that had to come and rescue the pooka.
North eyed his long eared friend. "Why would he run from you?"
"I, uh, tried to- he tried- Oh, I just wanted to knock him out of the game for a few days so that I could have a peaceful Easter for once. Little bugger smarter and faster than he lets on and got away from me. He's been suspicious of me ever since."
"Don't blame him," North snorted.
There was silence for a long time between them. They all had not had much experience with the winter spirit, Tooth having not even met him in person before. She watched her fellow Guardians in silence, knowing that bringing Jack to Santoff Claussen would be a puzzle.
"Maybe if we appeal to his nature, he'll be willing to listen," she suggested. She half expected Bunny to shoot her idea out of the sky before it even had a chance to fly, but he remained silent. Sandy made a question mark over his head to indicate his confusion. "Maybe we could bribe him with something. What does he like?"
"Cold, snowy places and making me miserable," Bunny replied bitterly.
"You really do not like him?" North asked the Pooka, amusement in his eyes.
"No," was the simple reply.
"Okay, so he's a trickster. What do tricksters like?" Tooth asked, already knowing the answer.
Bunny shrugged. "I don't know, adventure?"
"Toys?" North supplied.
Sandy shook his head, waving his arms. The others had moved on, leaving Sandy behind. With a puff, he dug through his hair until he touched something cold and never melting. He pulled the ancient snowflake out and waved it around.
Tooth saw it, gasping as the way it glowed with whatever residual energy that kept it from melting away. Sandy made more snowflake, and two figures talking to each other.
"Companionship," Tooth caught on. "He wants a friend."
The pooka laughed. "We don't have time to make friends with him, Tooth."
"That can happen later," North replied. "It is matter of finding him that is problem."
Sandy waved his hand again, creating another snowflake and making the motion of following it.
"Okay, so Sandy can find him. How are we going to get him here?" Bunny asked. "Shove him in a sack?"
North's booming laughter echoed over the globe room. "That is exactly what we do! Bunny will lead him into dark ally and then you will shove him in sack and throw his through a portal."
Bunny snorted, obviously liking this plan. "Two problems, mate. If I'm leading, how am I going to get him into the bloody sack? And how am I going to even get him into an ally?"
"Take my yetis, they will help. And if he is trickster, then he is very curious, no? Be mysterious, make it game. He is bound to follow you."
"Okay, but why do I have to do it?"
North smirked. "If you think you are not fast enough for Jack Frost, then I can ask Tooth."
Tooth smiled as Bunny sputtered indignantly. "I am to fast enough for that little twit. I just don't see why I have to do the grunt work."
"No grunt work," North encouraged. "Fred and George will do grunt work. You just have to draw him in."
Right, because curiosity was really going to be the death of Jack Frost one day.
Afterword: Okay, I need a beta. Seriously, I need someone who is going to look at my stuff and tell it's good or needs to be buried. A few criteria: you need to be okay with getting swamped because I am a quick person. You need to be a grammar nazi. And lastly, you need to be able to catch timeline and logic problems. The benefit (or curse) is that you'll be privy to my ranting about this story in great detail. PM me if you want the job.