The match as a whole was complete and utter domination by Liverpool and the Foxes looked off the pace throughout.
Daniel Sturridge ran the show in the first half for Liverpool, his movement proving a constant issue for the Foxes backline.
The Reds grabbed their first through Roberto Firmino. Sturridge did brilliantly to split Wes Morgan and Robert Huth, leaving a massive gap for Firmino to exploit. An excellent pass from James Milner made it easy for the Brazilian to take a touch and calmly slot the ball home to make it 1-0.
It went from bad to worse for the Foxes. The goal seemed to derail the team of any confidence. Leicester seemed to be giving the ball away at will for the next 10 or so minutes, allowing Liverpool to pick them apart. The Reds used the wide areas brilliantly, splitting the defence with relative ease. Meanwhile in the middle of the park, the Foxes couldn't win a 50/50 ball to save their lives, so it was no surprise when Liverpool bagged their second courtesy of Sadio Mané.
A ball over the top caught the defence completely flat-footed as Sturridge was easily able to win the footrace and put in a cheeky back-heel for Mané to tap in to make it 2-0 to Liverpool.
The game looked to only get worse for the Foxes as they continued to cheaply give away possession, only to be gifted a goal straight out of the Sunday League in the 38th minute.
Lucas Leiva made a complete mess out of a Simon Mignolet goal-kick, crumbling under the pressure of Okazaki and passing the ball straight into the goalmouth for Jamie Vardy to cut the lead in half.
That absolute gift of a goal brought some confidence back to the visitors as the team seemed to simultaneously remember the Liverpool backline consisted of two midfielders being used as makeshift defenders, finally deciding to make a run at them.
Despite a late onslaught from the Foxes and some shaky play from the Liverpool defence, the Reds were able to hold on, Leicester coming closest through a Huth header off and over the crossbar in the 41st minute.
The Foxes went into the break with all the momentum and an energy similar to that of last season. Unfortunately that energy was quickly squashed in the 56th minute as Adam Lallana all but ensured a victory for Liverpool, smashing a gorgeous effort into the top corner of to make it 3-1.
The Foxes attempted to fight back in the 61st minute with Vardy going clean through on goal only to be denied by a sprawling Mignolet and kill any hope left in the side.
Despite some more late pressure from Leicester, it seemed half-hearted at best and came to nothing. It was really no surprise that Firmino tapped in his second of the match on the counter to make it 4-1.
Overall the Foxes lacked any form of shape defensively and struggled in midfield. Daniel Amartey in particular looked completely off the pace and was constantly bullied by the Liverpool midfield, seemingly unable to win any 50/50 ball and constantly cracking under pressure with the ball at his feet. It's definitely not the type of showing the Foxes will be looking to take into their first Champions League clash as they lacked energy and cohesion throughout.