"Pershi lastivky" (First swallows) is the TV series about suicides in the middle school.
In this scene we see the girl who has been in a coma for 9 months.
The task was to show a change of seasons behind the window.

VFX making-of

To get an appropriate background with moving shadows for VFX I made a day time-lapse using GoPro. 

3D scene, cleanup, compositing, tracking, roto - Stas Bosyi
keying, roto, color grading - Dima Didenko
art director - Alexander Antonov