All Twinkle wants is to be a big sister. When her wish comes true and theres a surprise at the end of the rainbow, Twinkle must get her new baby brother Fizz back home before bedtime.

But with the forest filled with so much magic and adventure, will Twinkle and Fizz go to sleep in time?

Written specifically with the aim of calming little ones before bedtime, this adorable, heartwarming story is perfect for sleepy unicorns.