Android Nested Fragment Approach

I am newbie in using android fragments .I got a scenario Let me explain it i got

1. Main Activity that extends FragmentActivity .My main activity consists of two Fragments
2. Option List That extends Fragment
3. Details List that extends Fragment
4. Details description that extends Fragment

When I launch my main activity . It will consist of Option List in Fragment 1 & Details List in Fragment 2 . Then i select an item from Details List . Then its Description must be loaded into Fragment 2 of the main activity

See this image

I am not getting an idea how to achieve this . I mean how can i tell Details List fragment to load Details description fragment inside main activity . Also when i press back button i must return to the initial stage ie

EDIT :

What i did was creating a interfaces(Listener) inside fragments and implement it on my parent activity. But if there is 10 different fragments i need implement all interfaces in my parent activity . So is there any other approach to achieve this??