The scenario is up to you, but you need to choose ideas that work with the engine rather than against it:
Bodies live in a 2D world (bodies can't go behind or in front of other bodies)
The engine follows the laws of physics:
Scenarios with unrealistic behaviour will be hard work
Set up initial conditions (positions, velocities) and let the physics engine bring it to life
Unlike the underlying Box2D library, this simple library does not support tying bodies together with joints, axles, motors, etc.
I need to make brick breaker game