Synopsis
OP (Rachel Bloom) and ED (Adam Devine) are sibling flummels - cute, furry donut-shaped animals who live on an island in the Galapagos in 1835. Ed, a grumpy pessimist, desperately wants to fit in with the community while Op, overly exuberant, constantly creates havoc that makes them outsiders. When Op’s impulsive actions end up ruining the preparations for the Flower Festival, Op and Ed are banished. Undeterred, Op leads Ed up the far side of the mountain to the forbidden zone in search of flowers so wonderful the flummels will have to let them rejoin the festival. There, to Op and Ed’s amazement, they discover a large, mysterious glowing flower which opens up and, with a magical pulse, sucks both Op and Ed into it. They plummet through a colorful time portal and pop out into a house in.. modern day Shanghai.
In Shanghai, Op and Ed meet CLARANCE (Ken Jeong), an adorable little dog. Clarance tries to help them understand where and when they are, and help them get back. He takes them to a museum where they learn, to their horror, flummels went extinct in 1835 – right after they fell into the time flower. Op and Ed realize they have to return to 1835 and save their species.
Clarance offers Op and Ed another “time flower” that his scientist owner, the dearly departed Dr. Chung, had been experimenting with. This transports the trio to a place that exists outside of space and time – The Time Terminal. There, hundreds of time flowers connect, each leading to different points in history. Unfortunately, another Op and Ed accident throws Clarance into a random portal and he's lost in an unknown time and place.
Unsure what to do, Op and Ed meet “THE EXTINCTABLES” - a family of odd, extinct creatures who live for all of eternity in the safety of the Time Terminal. With their help, Op and Ed must first search for Clarance in order to find their way back to save the flummels. Even as the siblings squabble, they’re able to find Clarance in 1917’s Antarctica, chained to Ernest Shackleton’s team of sled dogs. They manage to get back to the safety of the Time Terminal, but not without the triceratops Extinctable getting wounded.
Op’s impetuousness almost got the last dinosaur killed! Ed is furious with his sister and they have a huge falling out. Realizing she’s at fault, Op sadly sets out on her own to return to her 1835 Galapagos home and warn the other flummels about their imminent extinction.
In the Galapagos, Op tries to convince the flummels about everything that she’s been through. She’s discovered they're all in danger from the island volcano that's about to errupt. But there’s a surprise for Op, Ed and the others when they learn the true reason flummels went extinct. All hope seems lost as our tiny flummel heroes must try to save their entire species all by themselves. The odds seem insurmountable until the Extinctables show up to help save the day. In the end we can only hope that Op and Ed become heroes and flummels will go onto live among us today.