The beginning of the episode introduces the original Ino–Shika–Chō Formation, that is the parents of Ino, Shikamaru & Chouji, but nothing important is shown.
Watch between 6:00 and 13:50 minutes, you can skip the rest.
The important part is the conversation with Hinata.
This episode is mostly filler & recap, although is marked as "mostly canon".
Although Episodes 53 & 57 are marked as "mostly filler", they are important to the plot.
Watch Episodes 1-25 - Prologue: Land of Waves Arc.
Some filler characters are based on upcoming canon arcs, causing you to get the characters confused, as they look alike with different personalities.
They also have many elements you saw in previous arcs, making them boring for seeing them again and again.
Fillers slow down the pacing of the story and this dilutes the message the main story is trying to convey.
Fillers plot are based on upcoming canon arcs, which causes you to see the low-quality content first and spoil the good, upcoming canon plot.
Fillers create many inconsistencies with the main story.