Hasta La Motion!

I was just wondering if there is a curve based time remapper like the one inside of Shake’s file in node……. I have some high speed footage where i need the speed to ramp way up to normal speed then go back to super slo mo at specific frames. I haven’t had much luck with retime since it just gives you control of the speed. Is there something I overlooked? I just did a temp version in shake for now, but i’d love to keep in all in nuke so if i need to do some changes i wont need to re render out of shake over and over again. Any help would be appreciated.

Thanks,
Evan