Thomas' Sleepuffing is the first episode of the fourth season of Thomas' Adventures Chronicles.
Thomas has been working for 3 days and 3 nights and haven't had a sleep once. but because Sodor is very busy and noisy, The Fat Controller decided to send Thomas to sleep at Canterlot High and ask Sunset Shimmer to be in charge along with Heckle, Jeckle and The Powerpuff Girls to make sure nothing wakes Thomas up. But a little while later, Thomas started to sleepuffing. But with all the noise ahead of him, will Sunset Shimmer, Heckle, Jeckle and The Powerpuff Girls stop him in time before he reaches the noisy area?