Episode 423 : Tutter ' s First Big Sleepover Bash While Treelo , Pip and Pop are staying at Otto and Etta ' s , Tutter holds a sleepover for all classmates at school at the Big Blue House , with Ojo joining in as well . The mice are astounded by the size of the house and everything in it , but Bear does his best to assure them that they ' ll be well taken care of . He suggests that they think of it as their " home away from home . " They decide to play a game called " parmcheesy " and Ojo ' s worried because it sounds like a game only for mice , but Tutter assures her it wouldn ' t be a party without her . When it comes time for bed , Keisha wants to call her parents and soon all the other mice do too . As for Tutter , he ' s a bit worried what the mice will think of his stuffed toy , Kitty , but Bear shows him that they all have their own stuffed toys . As they settle in to sleep , Luke is first uncomfortable with his pillow and then wants to hear a lullaby . Shadow appears to sing her special lullaby , but Luke misses the one sung by his parents and wants to go home . Synopsis . Bear welcomes viewers with the song " Come on In , " singing that even though he has a long list and a full day ahead , " the Big Blue House is your house when you come on in . " After sniffing us , he wonders if we ' ve had some cookies and milk , but decides that maybe we just smell this good all the time . He comments that he ' s just prepared a snack for Tutter - - - a lovely cheese tray . He explains that Tutter is bringing a " couple of friends " over for a sleepover . He notes that sleepovers are really good practice for staying over a hotel . They ' re fun because there ' s many fun things to do during a sleepover - - - playing games , eating snacks and just having fun with friends . Treelo , Pip and Pop are staying over at Otto and Etta ' s but Ojo is there for the sleepover . She tells Bear that it ' s time to head over to Mouse School to pick everyone up . At the school , Tutter is talking about the sleepover with his friends . They ' re all excited about it , but Luke wonders just what one does at a sleepover . They talk about it and come with some great ideas , but decide to pass on Moss ' s suggestion of telling spooky stories . Bear arrives and Tutter tells " everybody " to grab their gear because they ' re moving out . Bear is quite surprised by the use of the word " everybody . " As Bear watches mice file into the Big Blue House , he realizes that this wasn ' t the small gathering he had expected . Realizing Bear ' s surprise , Tutter asks if it ' s all right that he invited the entire class - - - he didn ' t want everyone to feel left out . Bear reluctantly agrees that it ' s fine . As the mice settle in , they can ' t help but comment about the massive size of the furniture and other items in the Big Blue House . Bear reassures them that he ' ll be able to take care of them . He welcomes them to think of it as their " home away from home " and sings the song " Home Away from Home " to reinforce it . The mice continue to explore , finding Tutter ' s cheese drawer . They quickly consume the cheese platter that Bear made earlier and asked for more . Luke suggests baked Brie , something his parents often make him at home . Bear agrees , noting that it can be fun to do something during a sleepover that you do at home . The mice then play a game called " parmcheesy , " which is designed to test knowledge of types of cheeses . Ojo , worried that it ' s more of " mouse game , " says that she ' s going to go up to her room to play . Tutter asks her to stay , saying that it wouldn ' t be a party without her . After all , sometimes its not about what you know , but just having fun together . As everybody gets together for the game , Bear expresses satisfaction that the party is turning out well and decides to start cleaning up . It comes time to go to bed . Keisha asks if she can call her parents first . Bear agrees that it ' s okay and asks if the other mice would like to also . They all do , so they line up to make their calls . After this is done , Bear settles them down and turns out the light . He starts to leave , but Tutter quietly calls for him . Bear asks him what ' s wrong and Tutter explains that he always sleeps with stuffed toy , Kitty . He ' s worried because he ' s not sure what the other mice will think about her . Bear tells Tutter he has something to show him . He indicates the other mice and Tutter sees that he ' s far from being the only mouse with a stuffed toy - - - all the other mice are sleeping with one too . Moss has a starfish , Keisha has a teddy bear and Luke has a crab . Tutter thanks Bear and Bear once again tries to leave , promising everyone that they ' ll go on a hike . Luke , however , isn ' t getting comfortable . He first trades pillows with Tutter and then asks for a lullaby . All of the mice like this idea , so together they sing " Where O Where is Shadow " to summon Shadow , who performs " Shadow ' s Lullaby . " Though Luke likes the lullaby , it wasn ' t the one his parents sing to him . He admits that he misses his Mom and Dad and says that he wants to go home . Bear tells him that it ' s all right and he can call his parents to pick him up . The kids , hearing the commotion , ask what ' s happening . Bear explains the situation and they tell Luke that they ' ll miss him . Luke , realizing how much his friends care about him , decides that he ' ll give it a shot and stay at the sleepover . That night , Bear talks with Luna about the sleepover . Bear tells her that it ' s all going really well . After talking for a bit , Luna comments that the world sleeps better when she ' s in the sky , so she sings " The Goodbye Song " with Bear and then rises back up into the sky . Bear bids the viewers goodbye , just as Luke calls for him , saying that he usually sleeps with a vaporizer and needs a glass of water .