well there's a basketball match at some high-school or something.
the sharing is gonna be doing some stuff there so the animorphs plan to check it out (and in ax's case, enjoy watching his first basketball match). meanwhile, jake morphs into a lizard and sneaks into tom's backpack, and finds out tom's been carrying the disk the whole time. rachel and cassie get to the place first and morph mice (or rats) and sneak inside and think they see tom giving the disk to chapman (actually it was a soda can) and relay the info to marco and ax when they arrive. tom goes down to the yeerkpool (there's an enterance in the school) and the alarm goes off (because jake is inside tom's backpack), so he tries to switch it off and ends up turning the morphing sensors (morphing sensors?) off, so jake uses the opportunity to demorph (out of sight). tom continues to the pool so he can feed, and chapman uses the opportunity to take the disk and he puts it on a window ledge. then he goes down to the game. jake morphs again and follows tom after the yeerk is done feeding and finds out about the yeerks that don't need kandrona rays (say what?), while ax finds out the disk isn't on chapman. tom traps jake in lizard morph in a room. rachel goes out to find tobias, while tobias finds the disk. when he touches it though, he starts to change. the yeerks' plan is revealed when there's an announcement for a tornado coming and for everyone to go underground (into the yeerk pool). outside, tobias becomes human and elfangor (or a hologram or something) appears before him. and that's the end of the first episode...
the second episode starts with rachel looking outside for tobias and finds him as a human. they need to get back inside so they go in through a yeerk pool entrance tobias found, with rachel morphed as a yeerk from the dna on the disk (don't ask me how). meanwhile, cassie, marco and ax are being led down to the yeerk pool to be infested along with everyone else from the stadium. Tobias and Rachel come across the room jake is trapped in but can't help him yet. they're told to escort some people for infesting. marco, cassie, and ax see tobias, and marco goes over to find out what's going on. tobias and rachel tell him everything so marco goes off to find jake. ax is worrying about his time limit. and so is rachel. tom is talking with visser three, and he can't seem to find the disk. he thinks the andalite (jake) took it, so he goes in. just before he does, jake manages to break the lights so the room is dark. tom goes in, and when the light turns on, we see two toms. that ends episode 2.
episode 3 starts with visser three asking which is the real tom. rachel manages to demorph in time, but they get captured by controllers, so now tobias, rachel, cassie, and ax are trapped in line, and ax is running out of time. over with tom, jake, and v3, a controller has brought a scanner and things are not looking good for jake. luckily, marco has found the controls and somehow made the room where the new yeerks are kept set to boil, killing the yeerks. ax is almost stuck in morph, but in the darkness manages to demorph in time. marco morphs ****roach but gets crushed by a rock. in the end, they all managed to escape and head over to the arcade place they always hand out at. and that's pretty much it...