Imagine was created by Disneyland's in-house entertainment department while Walt Disney Creative Entertainment was in the process of developing Remember... The show contained elements of Fantasy in the Sky, Disneyland's fireworks show from 1958–October 1999, and Believe, the show from late 1999-October 2004. Imagine replaced with Fantasy in the Sky during Spring Break 2005 for two weeks before Remember... made its debut.
Imagine also was the first Disneyland fireworks show to employ pneumatic launch technology. This technology uses compressed air instead of gunpowder to launch shells into the air, thus resulting in reduced pyrotechnic fallout into the park and surrounding residential neighborhoods.
The show opens with The Second Star to the Right, and then a woman says
"Since the beginning time the stars have inspired us to wonder, and to open ourselves to the beauty that sparkles within our imagination, for imagination keeps us young at heart, and remind us that dreams can come true, so gaze up to the shimmering stars to that magical place, that only you can imagine"
Then the song "When You Imagine" and "When you Wish upon A Star" plays and a woman says:
"Dreams can come true, and when you share them ... imagine the possibilities" Then the following songs are performed:
- Someday My Prince Will Come
- So This Is Love
- Once Upon A Dream
- Chim Chim Cher-ee
- Part Of Your World
- Beauty And The Beast
- Just Around The Riverbend
- The Circle Of Life
- A Whole New World
At the end, "Share a Dream Come True" plays and Tinkerbell flies over Sleeping Beauty Castle. The show ends with a plethora of white fireworks and some other loud shells.