The world in one breath
Behind the door lies Nestwood — the wood where every animal in every story was raised: burrows in the roots, nests in the eaves, and the Heartwood, the oldest tree in any world, keeping watch over the lot. And last night something went wrong, in the smallest possible way: the Flustercloud, the smallest and sorriest weather there is, tripped over a mountain and tumbled the whole way through the wood — and the nursery’s five littlest animals, the Nestlings, bounced out and rolled off to hide. Nobody is hurt. Nobody is blamed (the cloud is mortified, and drizzles about it constantly). But evening is settling, and nothing in Nestwood can say goodnight until every Nestling is home. Your child is the hero the wood sent for by name. Their friends are the rescue crew. And the babies aren’t going to carry themselves.
What the party actually does
They step onto the Meadow Edge on warm green evening light and shout the words that tell every hiding Nestling help is on the way. They learn the Nest Call — pat, pat, hush — the only crew call in any world that ends quiet, because here treading gently is the whole point. They follow the First Ranger’s signposts down the Bramble Path and into the Hollow Log — your rooms, re-wooded by the map (dim here is cosy, never dark) — and cross the Riverbank by the Stepping-Stumps or the Otter Slide (fall in and the moorhens will talk about it for weeks). They find the five Nestlings one by one — scattered and hiding, drowsy and waiting — and every find is a greeting in the baby’s own language: a cheep here, a snuffle there, and two or three we’re not going to spoil, because one of them is the funny one and one is saved for the very end. They stand before a stretch of the Heartwood’s bark, carved with the name of every creature the wood ever raised — and find, low down at child height, the blank bark where the new names go. And at the end, at the Heartwood’s roots, all together, they say the one thing the whole wood has been holding its breath for — the one night of the year children are begged to shout bedtime — and a very small cloud’s drizzle bends into its first-ever rainbow. Then: feast (every rainbow ends somewhere, and this one ends at the long table), cake, and a ceremony where the birthday child is named Warden of Nestwood and awards every single friend.
Two versions, one world
Five to seven get one shared trail, picture-rhyme clues, track-matching (whose paws crossed this card?), bramble-knots that only untangle for a good answer, and the goodnight taught aloud; eight to eleven get search parties on parallel trails, the Track Code (decoding is tracking — each animal’s print is a letter), the bark-tally cipher, and a ten-glyph puzzle nobody can finish alone. Both end the same way: the wood tucked in, one child crowned, and the sorriest cloud in any world dozing under its own rainbow.
Build their adventure 
