After a hard day's work, Heesu wants nothing more than to go home and have a relaxing time with his…toys. He's amassed quite a collection over the years so he's not lacking for options. But one day, things start to oddly go missing from his house. His shampoo, his remote, his half-eaten apple and his most precious toy! Maybe he's just absent-mindedly misplacing things these days, he is stressed out at work after all. That's what he thought anyway, until one day he came home and caught the thief red-handed! The only problem is, this thief isn't just your plain old neighborhood cat burglar, in fact he's not from Heesu's neighborhood at all! This thief is from another dimension and now Heesu is trapped there too. Hm, this thief is kinda cute…but no more toying around, Heesu's gotta get back home anyway he can!