We can't help you with this, sorry. We don't do homework here. Even if we did, no one is going to summarise Euthyphro , Apology, Phaedo and Republic for you.
That's a very difficult assignment you have. You're supposed to work out what Plato thinks about the reality of mental concepts. Is it too late for you to withdraw from that subject? In any case, that's Philosophy, not English.
Student or Learner