This is what folks in the musical-making industry call "The Book":
The story is that of a fun-loving family of musical pirates who don't have the heart to actually plunder from anybody ("Oh! We're Terrible Pirates, But Not Terrible In The 'Terror' Sense Of The Word"), so they roam the Japanese countryside, dragging their boat across land with large ropes made from old sheets and clothing, living off the good grace of farmers and schoolchildren ("We'll Work For Grain And Apples, And Maybe For Crayons Too"). Every member of the family has their own private obsessions: Father collects bottlecaps, Mother collects magazines that never published beyond the first issue, Jakarta collects matchsticks, and Little Tohira collects acorns, nuts and seeds ("Look At Our Collections Of Largely Useless Things!").
One magic night ("One Magic Night"), the musical pirate family sleeps in an enchanted wood, and when they awake, the prized nut collection of Little Tohira has been spirited away! Chasing the elfin thief through the woods ("Stop! Come Back With My Nuts Or My Anger Shall Be Immense!"), Little Tohira is delighted and astonished to find it is a Totoro! ("Totoro!")
As things transpire, only Little Tohira and Jakarta can see the Totoros ("It's A Snuffleupagus Thing"), but the parents are untroubled -- they know that only children can see Totoros, and that's just the way it is ("Not Seeing Totoros Is Irrefutable Proof That We Are Slowly Getting Older And Going Blind"). The children and Totoros have mystical adventures in the woods ("Mystical Adventures In The Woods").
Disaster strikes when Jakarta's matchstick collection and Mother's defunct-magazine hoard interact to set the pirate ship ablaze, and a weary family tries to drag their burning home to a nearby lake ("Towing A Burning Pirate Ship Is Harder Than It Looks"). Fatigued and despondent, they are about to give up when the Totoros summon a storm to extinguish the flames ("Lo! A Storm To Extinguish The Flames"). The parents think it's a freak of nature, but the children know the truth. ("The Children Know The Truth.")
Fire extinguished, the family continues on its path, filled with a renewed desire to travel and collect in a more fire-retardant way: Mother now gathers asbestos tile from abandoned industrial sites, while Jakarta gathers rusty bits of metal and broken glass. ("Our Collections Are Now More Dangerous, But At Least They Won't Catch On Fire.")
In a stunning reprise, the Totoros take to the stage and present a mime/dance interpretation of the social mores and pressures leading to the Pre-Raphaelite painting movement of the late 1900s.
FIN
All I need now is music, lyrics, a venue, and half a million bucks.
Takers?