There’s at least 3 things going on in that shot.
1. Slowed footage. You can do this with Timewarp, which ships with AE, or another plug-in like Twixtor or Kronos.
2. Rotoscoping. The character in the front sits on top of the effect, so you’ll have to separate your subject from the background.
3. Funky color separation effect. This could be done in a few different ways. It looks like they basically passed the footage into AE’s 3D Glasses effect to generate an anaglyph version of the footage. You could, however, create a more robust effect by using 2 copies of your footage.
Apply the “Solid Composite” effect to both copies. Set the blending mode on the effects to Multiply and lower the Opacity of the effect to 50% (a good starting place, you can change it later). Set the top layer’s blend mode to Add. You can then choose 2 arbitrary colors instead of Red/Blue or Red/Green for your effect. Move the layers to get the separation.
Also it looks like they scale/move the background and subject footage some and blur the background.
Darby Edelen