1.Nc3 e6 2.Nf3

Black can transpose with 2...f6 to the line 1.Nf3 f6 2.Nc3 e6.

Otherwise, the main line starts with 2...Qf6 3.Ne4 Qd4 (or 3...Nh6) 4.Nxd4 Nf6 5.e4 Ng4 6.f4 g6 7.Bb5 c6 8.b4 (or 8.b3).